How to get latios or latias easier:

Fly to whatever city you want check the pokedex of where he is if he is not neat that city that you are in then fly again to the same city and keep doing it until he is near you go to the place that he is in once you get him near you and go to your pokedex but be fast or he will leave ho to the pokemo'n data and press cry for like five times or more then get out of the pokedex and look around the grass the first pokemon that you find is going to be latias or latios inable for this cheat to work even better you got to throw a master ball at it it worked for me.
Sent in by: Eric

Clone pokemon:

Go to battle tower walk to the PC deposit any pokemon in your party save the game withdrawal the pokemon walk down to the far right lady behind the counter take the challenge choose the selected cloning pokemon as first entrie second does not matter save game but when she says overwrite file turn off your game. go into your party and the pokemon should be there then walk to the PC and the same pokemon should be there to.
Sent in by: Bazza

Mystery glow:

You will need two gameboys and anemerald and asaphire versian. trade a mudkip torchic and a treeko from your saphiar to your emrald. evolve them all. whenever you send them out they will glow red green or blue depending on the pokemon.
Sent in by: pokeman

Unknown Hint:

If you put a pokemon to sleep it's best you use a timer ball. Its how I caught Regirock and Registeel!
Its better on legendary or Super ancient pokemon.
Sent in by: Rsiggee

Hurry up and hatch:

When you have an egg in you party look in its summary if it say's "it's making sounds. it's about to hatch!" go to the firery path and walk through there a couple of times and your egg will hatch.
Sent in by: charlwood

How to get registeel and regirock:

To get regi steel go south east of lilycove and go into the cave go to the center and use flash.

This is how u get regirock go to the desert and go into the cave go all the way to the end of the cave take two steps backward and three steps left and then use rock smash.
Sent in by: Unknown

How to find Latias or Latios. (The short cut):

to find latios or latias, Defeat the elite 4 and then look at the tv etc. then you go to Mauville and search near new mauville in the water or around the area in the grass.
Sent in by: pokelover

The art of catching already seen legendaries:

The art of catching already seen legendaries. (not all) is to look them up on the pokedex. once you find them do not fly there or it will run away. I have done this with Latias 4 times. Oh and use arena trap pokemon.
Sent in by: Pokelover

Don't track:

IF you end up seeing LATIOS/LATIAS, use a move block or anythin' that cant let it escape. Use all the ultra balls[ if you have any] until it gets caught. But if it runs before you can, don't track it because it'll just go to somewhere else. Be better off if you just search random grass patches. Shouldve seen me.
Sent in by: Corey Mullins

Egg hatch super speed:

To hatch eggs faster go catch a slugma at mt. chimney then put it in your paty right above the egg. then get a mach bike and get right in front of the sign for mauvile. start riding in a straight line until your screen says huh? your egg will hatch and your brand new level five is in loving care. this trick WILL work with anorith and cradily.
Sent in by: aidan,the master trainer.

Wild Surskit:

To obtain Wild Surskit in Emerald, use the top floor of any Pokemon Center to Mix Records with any Ruby or Sapphire version of the game. After you're done, you will periodically get news reports of swarms of Wild Surskit.
Sent in by: Unknown

Rare pokemon:

Go to the top of mt.prior Then Use sweet scent by the old man and you'll find a rare pokemon.
Sent in by: hotrod12321

Ditto Effect:

Link to a friends GBA. Trade your useless PKMN (we'll use Magikarp as an example) for their strong PKMN (we'll also use Deoxys as this examle) but as soon as your friends GBA says 'Take good care of 'Magikarp'!' turn their GBA off! Once your GBA has saved, have your friend turn on their GBA again. They will still have their 'Deoxys', but your 'Magikarp' will have turned into one also! Congrats! You are the proud owner of a Full Pokedex! (P.S: Make your friend's Deoxys hold a masterball/rare candy/other good thing so that when you trade, you will both have 1 of that item! You take the item from the PKMN, and repeat the cheat until you have enough masterballs!) (P.P.S: Timing is criticle! Turn off the GBA too soon and everything could go normal, turn it off too late and your game could be earased forever! I learnt this the hard way, and I HAD ALL THE BADGES AS WELL AS ALL POKEMON IN THE GAME!!!!!! AAAAAAAAAAARRRRRRRRRGGGGGGGGGGGGG!!!!).
Sent in by: Sean 'PokeMaster' Mackey

Sudowudo & Smeargle:

When you get to the battle frontiergo to the south - east area and then down a narrow path past an old lady and to a moving tree, this is sudowudo* Level 40 (like in gold/silver) use the pail on it and then battle it (catch it if you want, theres no other chance) then surf onto the water past where sudowudo was and go down the waterfall and then surf west, after a little while you'll come across a cave go in and there'll be wild level 40-50 smeargle, you can go through the cave and out the other side or go back out the way you came and up the waterfall.

*it's a good idea to save in case you faint it the first time.
Sent in by: calicomary

What happens with three rare pokemon  -  when you get far enough you get to face gradon and kidoer, in a dobble battle (both of them fighting you) you can catch them or defeat them and after you do that rukuza will come down from the sky and face you.

Unlockables  -  Catching GSC Pokemon At The Safari Zone  -  After you defeated the Elite Four, go to the Upgraded Safari Zone. In the Safari, you can catch some GSC Pokemon such as Houndour, Aipom, Stantler, Mareep, Miltank, and more GSC Pokemon. This Unlockable works only in Pokemon Emerald.

How to get johto starters  -  First, you must have your pokedex completely filled up. Go back to professer birch. Talk to him. He will let you choose one of the three johto starters: chikorita, totodile or cyndaquil.

National Pokedex  -  Unlockable How to Unlock  -  National Pokedex Beat the Elite 4. Proffessor Birch will visit you and give it to you once you leave your house.

Get to Battle Frontier:  To get to the Battle Frontier, you must defeat the Elite Four with Pokemon only with your I.D. number. After you defeat them, you will get a ticket from your father to get to the Battle Frontier. The Battle Frontier is another region with fourteen more badges to collect.

There are seven gyms in the Battle Frontier. The seven gyms are the Battle Tube, Battle Dome, Battle Factory, Battle Arena, Battle Palace, Battle Pyramid, and Battle Tower. Each gym has two badges to collect.

Johto starters:  When you complete the full 202 Pokemon of Hoenn, Professor Birch will call you on your Pokenav and say that he wants to give you a surprise. You can now choose one of the three Johto starters (Chikorita, Cyndaquil, or Totodile).

Deoxys:  Like previous games, Deoxys has its own form in this game. It is the Speed form. It can only be found on Birth Island.

Missing Pokemon:  The following Pokemon are not found in the game: Surskit, Masquerain, Meditite, Medicham, Zangoose, Lunatone, and Roselia.

Land Cave:  Land Cave is a cave found by the shore after defeating the Elite Four. The legendary Groundon thrives in the Land Cave. It is on Routes 105, 125, 127, or 129. You must go to the Weather Center. He will tell you where Groundon is located. However if you take too long finding it, it will move on.

Sea Cave:  Sea Cave is a cave found underwater after defeating the Elite four. The legendary Kyogre thrives in the Sea Cave. It is on Routes 105, 125, 127, or 129. You must go to the Weather Center. He will tell you where Kyogre is located. However, if you take too long finding it, it will move on.

Safari Zone:  The Safari Zone is the same as the one in Pokemon Ruby and Sapphire. The only difference is that after you defeat the Elite Four, two more areas appear full of Johto Pokemon that you could not get in any other games (besides Pokemon Colosseum).

Magma Symbol:  To get the Magma Symbol (which is required to get to the Team Magma Base), you must go to Mt. Pyre after you defeat Team Aqua in the cove next to Lilycove City.

Berry Fix:  Press Down + Select + B at the screen with the glowing Rayquaza. You can now use the Berry Fix with Pokemon Ruby and Pokemon Sapphire.

Get to Battle Frontier:  To get to the Battle Frontier, you must defeat the Elite Four with Pokemon only with your I.D. number. After you defeat them, you will get a ticket from your father to get to the Battle Frontier. The Battle Frontier is another region with fourteen more badges to collect.

There are seven gyms in the Battle Frontier. The seven gyms are the Battle Tube, Battle Dome, Battle Factory, Battle Arena, Battle Palace, Battle Pyramid, and Battle Tower. Each gym has two badges to collect.

Johto starters:  When you complete the full 202 Pokemon of Hoenn, Professor Birch will call you on your Pokenav and say that he wants to give you a surprise. You can now choose one of the three Johto starters (Chikorita, Cyndaquil, or Totodile).

Deoxys:  Like previous games, Deoxys has its own form in this game. It is the Speed form. It can only be found on Birth Island.

Missing Pokemon:  The following Pokemon are not found in the game: Surskit, Masquerain, Meditite, Medicham, Zangoose, Lunatone, and Roselia.

Land Cave:  Land Cave is a cave found by the shore after defeating the Elite Four. The legendary Groundon thrives in the Land Cave. It is on Routes 105, 125, 127, or 129. You must go to the Weather Center. He will tell you where Groundon is located. However if you take too long finding it, it will move on.

Mystery Gift option:  Enter any Pokemon Mart and go to the clipboard that is by the shop keeper on the counter. Take the survey and enter in the words "LINK TOGETHER WITH ALL". The man will then alert you that you can now have access to the Mystery Gift option, after saving. To make it easier to find the word you are looking for, press Select, which will take you to A-Z mode, then select the a letter to bring up a list of words, beginning with the first letter of the word that it begins with.

Sea Cave:  Sea Cave is a cave found underwater after defeating the Elite four. The legendary Kyogre thrives in the Sea Cave. It is on Routes 105, 125, 127, or 129. You must go to the Weather Center. He will tell you where Kyogre is located. However, if you take too long finding it, it will move on.

Safari Zone:  The Safari Zone is the same as the one in Pokemon Ruby and Sapphire. The only difference is that after you defeat the Elite Four, two more areas appear full of Johto Pokemon that you could not get in any other games (besides Pokemon Colosseum).

Magma Symbol:  To get the Magma Symbol (which is required to get to the Team Magma Base), you must go to Mt. Pyre after you defeat Team Aqua in the cove next to Lilycove City.

National Dex:  Immediately after you defeat the Elite Four, you will go to Professor Birch. He will give the National Dex to you.

Pokemon Diploma:  Catch all 202 Pokemon in the Pokedex, then talk to the Game Designer at the hotel in Lilycove City.

Berry Fix:  Press Down + Select + B at the screen with the glowing Rayquaza. You can now use the Berry Fix with Pokemon Ruby and Pokemon Sapphire.

The Berry Master's Wife Codes  -  When you visit the Berry Master's House, be sure to talk to his wife. She'll ask you if you've heard any good sayings. If you tell her some special phrases, she'll give you some rare berries as a reward.

Code Effect

Super Hustle Belue Berry
Challenge Contest Pamtre Berry
Great Battle Spelon Berry
Overwhelming Latias Watmel Berry
COOL LATIOS You will get a Durin Berry

Battle Frontier  -  Once you beat the game, you can go to the Battle Frontier.

How to Unlock
Battle Frontier Beat the Elite Four.

Catching GSC Pokemon At The Safari Zone  -  After you defeated the Elite Four, go to the Upgraded Safari Zone. In the Safari, you can catch some GSC Pokemon such as Houndour, Aipom, Stantler, Mareep, Miltank, and more GSC Pokemon. This Unlockable works only in Pokemon Emerald.

Trainer Card Color Upgrades  -  As you accomplish more along your journey, your Trainer Card will change colors and rise in rank, depending on completing certain tasks. After completing one task, it will rise in one rank, but there are some tasks that cannot be completed until beating the Elite Four. You must do these tasks:

Become Pokemon league Champion
Complete the Hoenn Pokedex
Collect all the gold symbols in the Battle Frontier
Win one ribbon in all five of the Master Rank Pokemon Contests.

How to Unlock
Bronze Rank Do one of the tasks mentioned above.
Copper Rank Do two of the tasks mentioned above.
Gold Rank Do all four of the tasks mentioned above.
Silver Rank Do three of the tasks mentioned above

Unlock the Diploma
How to Unlock  -  Pokemon Diploma Catch all 202 pokemon in your pokedex. Then go to the hotel in Lilycove City and talk to the Game Designer.

Eon ticket - Mix records with a Ruby or Sapphire that has an Eon ticket, and Emerald will get the Eon Ticket. Use it at the SS Tidal to go to Southern Island, after the E4. You'll find a forest area that has an egg in the middle. Press A at the egg to find the Lati@s you did not choose. ex. If you said you saw a Blue Pokemon on the TV(Latios) you will encounter Latias, and vice versa.

Eon Ticket - Mix records with an Ruby or Sapphire game that has one.

Special unlockable Pokemon - There are certain pokemon that can only be caught when you trigger certain events, like castform.

Unlockable How to Unlock

Beldum See Steven's house after you beat the Elite four.
Castform Take out the rival team at the weather institute.
Chikorita, Cyndaquil or Tododile When you complete the 200 Pokemon of Hoenn. Professor Birch will call you on your Pokenav.
Deoxys Get the Aurara Ticket, and go to Birth Island
Groudon Beat the Elite Four, and go to the land lair.
Ho-oh/Lugia Get the Mystic Ticket, and go to Navel Island
Kyogre Beat the Elite Four, and go to the sea lair.
Latios or Latias After beating the elite four, watch the T.V. downstairs in your house.
Latios or Latias Mix records with a Ruby or Sapphire with the Eon ticket, and go to Southern Island.
Mew Get the Old Sea Chart, and go to Faraway Island
Rayquaza Get Magma and Aqua to get Kyogre and Groudon out of the cave, and go to Sky Pillar.
Treeko, Torchic, or Mudkip Help Proffesor Birch escape the wild pokemon

Jirachi - To get Jirachi, you need a GameCube and the pre-order version of Pokemon Colosseum. Then, trade it to Pokemon Emerald.

Mew - The only way to get Mew in the game is by getting the Old Sea Chart. This is an item that is only available through a special event outside the game.

Shiny pokemon - Every time you encounter a pokemon you have a 1/8192 chance of the pokemon being a different color, this is called a shiny pokemon .

Battle Frontier Excluded Pok'emon - In the Battle Frontier, the following Pok'emon are not allowed to participate:

Mewtwo
Mew
Lugia
Ho-oh
Celebi
Kyogre
Groudon
Rayquaza
Jiirachi
Deoxys

Battle pokemon masters(ash & Gary) - In the game once you complete the hoenn-dex u get a phone call to go to littleroot to get the johto starters.once thier you are aloud to take the three of them (if not youve not properly completed the hoenn-dex)which makes the national -dex to complete once tht is complete you get another call from prof oak requesting your prescence u go see him he says"i cant beeive it you are the 3rd person to catch every pokemon""in my possesion i have a ticket for the ss inferno which will take you to master island for a real pokemon test" so you go to the ss anne location(you cant challenge any kanto gyms and every house is locked)u board the ss anne u can sleep or battle but the trainers are just a waste of time when you arrive you climb of the ship ,walk up the stairs to a set of double doors which read"pass only if pokedex is complete" so you get to go threw but you are stoped by wally(the ralts guy"he doesnt wnt to battle he just says a lot of crap and hands you a mystery bag u open the bag it has 1 full restore,rare candy1,and 6 revives btw ull need the revives ,6 hyper potions thn he wishes u good luck and goes away u need flash to see where ur goin(i know no one keeps thier flash pokemon with them its hell) but thier is a pokemon centre outside ur best using max repels cause the wild pokemon are a nusence(arbok using glare so u cant escape for eg)thier jus tipical arboks,rhydons,seviper,golem etc u enter a room thts all foggy and a rmuble nd a wee voice box appers saying "okay pikachu thunderbolt" you carry on nd i thought this was real but only a illusion made by one of ash's,garys pokemon thier is a mewtwo figure,legendary dogs after tht then a lugia but only a illusion nearly wet myself wen i seen them as i have 99 masterballs once through the annoyin illusons u see gary nd ash battling they notice you and come over they dont say anything just start battling you two to one (now you best save before you gp in the room,they are mentle)ash throws out lv 89-pikachu,,gary-91 nidoking !

ash-lv 95-charizard gary-lv 95-blastoise then the hardest ash -lv 100 lugia gary lv 100 hoho it took me about 3 days to win i have aggron-98 zapdos-100 mew-88 blaziken-100 latios-91 kyogre-99 but i sillyly put kyogre nd aggron first i got swamped even thoo it wood look lyk i shood annihalate them its harder thn it looks once defeated.

Gameshark Codes

North American version

(M)aster code:
9266FA6C97BD  905B5ED35F81  B76A68E5FAB1

No Random Battles:
32C96211F488

Always Your Turn:
3DC737D7E4BC  3BC67645EE81  D43989B35E7F  9444C92364DE

Easy Win (Trainer):
D2201D237C06  DD3B48F5DE3F

Easy Win (Doubles):
BD2754F5E43E  DD3B48F5DE3F

Quick Contest:
59BEE865C65F  50BF29F1C81E

Maximum Score:
A62154B3792C  AF2395FE3960

Maximum Hearts:
A62154B3792C  2FB8E027164F

Max Coins from Pokies:
30DAA34BC79B  1FB97F954367

Hold Select for BP:
10C6FC61E2C9  F64140A276A5  10C6FC61E2C9  8F5DDCA742ED  10C6FC61E2C9
79D9F5A5D6FF 

Free Daycare:
1DA9FE177458

Maximum Sale Price:
309FE3C020BF  06FDFF8AB123

Infinite Safari Time:
7487A17AED58

Infinite Safari Balls:
841ADCEB5C76

Safari PKMN Easily Caught:
CD70DD2CEB13  7BEBB6D60A2D

Wild PKMN Easily Caught:
C2711CBA6F6B  72EA77420E4D

Gain 5000 Exp:
A744170AA996  9B540825258E  Press R + A while EXP Gained is displayed.

Press B + Select to access PC:
A845D79C2DEE  7FB163863763  A845D79C2DEE  805D5CA1C2B5

Infinite PP:
6DB720FFD630  79BA7465DC00

Pokemon #1: Max Stats:
02DF7FD900A0  70BBB5F1DC40

Pokemon #2: Max Stats:
6BB9F5BD1A61  70BBB5F1DC40

Pokemon #3: Max Stats:
825D1E9B8AA7  70BBB5F1DC40

Pokemon #4: Max Stats:
EB5B96DF90E6  70BBB5F1DC40

Pokemon #5: Max Stats:
02A728FBA020  70BBB5F1DC40

Pokemon #6: Max Stats:
6BC1E39FBAE1  70BBB5F1DC40

Action Replay Codes

(M)
d8bae4d9
4864dce5
a86cdba5
19ba49b3
a57e2ede
a5aff3e4
1c7b3231
b494738c

Infinite Money
c051ccf6
975e8da1

Battle: 1 Hit Kills
b63a2aeb
e4849958
c4ee7b57
20069537

Battle: R = More EXP
43d8ac45
0d3b349a
3dc869e3
d39c09b2

Have All Pokeballs
085938bb
99ff313d
2dafd739
5d796510

Have All TMs/HMs
c6511ec5
0f15c8e0
4689920d
5cff6ffe
8631b929
014933df
10257b84
3365249c
aea23f29
64edd481
1c91630e
c663e711

Pokedex Complete
93cc476a
8c7b6c01
03650473
df38618e
67c11314
8556956f
bb87c867
94118b68
f6be2d41
c51b2ef3
fa701ea5
7d896f37
c9adf3d5
20700d38
974ddbcc
406cf0ac

Low Game Time
49daa9d9
0ebf4a2a