Settings -> Carrier -> Automatic
Change Automatic to the Carrier you want.
When I was roaming in Singapore I sometimes switched between StarHub and Singtel.
Maxis Prepaid and Postpaid is the same Carrier - MY MAXIS

thanks for heads up. i mean how to update the carrier?

if you're using maxis, what is the current carrier says ? mine is Maxis 9.0

you can check them in setting > general > about > and see the carrier.

i remember when i was on 4.3.1. it says the Maxis 10.0

but when i downgrade to ios 4.2.1 now its is Maxis 9.0

u need to have the latest iOS to have the latest carrier settings too.

normally when u plug into itunes after u restore to the latest OS u get the carrier updates.

GEVEY sim is it safe to use? wont it damage the phone and how much does it cost??? please load me with infos thank you!!!

u might get banned by operator if keep using this sim.
also the price is exp. batter wait

Very expensive! Usd90
But is it true it can boost signal?

This post has been edited by V3000: Apr 2 2011, 08:04 AM

is there any related for using gevey sim that actually works baseband unlock with sim carrier ? do your revision.

oic because im planing to buy this at&t locked iphone4 so the seller told me to buy gevey sim... better wait you mean ill just wait for the upgrade? sori i dont have an idea???

what's wrong with just buying local sets? ur life will be much simpler

okay...I got a problem with my iPhone 3GS here ..hope some1 can help or advise me wad 2 do... I did not jailbreak and is on latest iOS ...

my iphone 3GS randomly turns off when my battery % below 50%. I duno what are the causes ..but for now I tried to charge my battery to 100% and then drain it completely and recharge in order to calibrate...

if clean restore is needed...can I noe how can I backup and restore my game data later on?

thank you

yah its better but this one will only cost me like 1600rm very cheap compare to the local sets here.. thats why.. is it a good move?http://s.lowyat.net/style_images/1/folder_post_icons/icon1.gif

Might due to hardware failure, neway try clean restore you iPhoney first.

Plug into iTunes, right click "your iPhone name" on your left side of iTunes. Then select "backup".

are you on 4.3? last time i upgrade my 3GS from 4.2.1 to 4.3 and it restart randomly and sucks away my battery energy very fast.

add the cost of the gevey SIM, and consider the uncertainty that comes with it. for all we know apple might simply block gevey SIM in ios 4.4. then think about warranty support. something broke, then u have to pay for repair unless u're going to US. us with local iphones can simply walk into a maxis/digi centre and get it fixed for free

the only good reason to buy a US iphone is when that iphone model is not yet released in msia or singapore.

i tried did a clean restore then restore my back up data few days ago... but the problem is still there
laz nite i tried calibrate my iPhone..now still charginig
i wonder constant use of Battery Doctor Pro or such apps will lead to battery problem?
cos the charging process is longer then normal charge without any apps

im on 4.3.1 now...the problem exists few version ago ... if not mistaken..earlier than 4.2.1

very nice point... i was also thinking of that but iam an expat here so im really not sure how long will i stay working here in malaysia. thats why, i dont like
the post paid iphone and they will be charging me extra 1000rm coz im an expat although its refundable. but i think, i cant refund it if suddenly i want to cancel my line..

wat u think bro?

Guys, i just changed my digi prepaid to postpaid and my iphone show unknown no matter who called.. Any1 know how to fix this?

Anyone here who normally use the speakerphone/loudspeaker mode while making a call? I normally use it and the other party of the call always complain to me that my voice is too soft and not clear, as if I'm talking very far away from the phone. Is the iPhone noise cancellation working too much till it cancels your own voice while in speakerphone mode?
I dont think Nokia has this problem.
Speakerphone mode is important to me while driving.

Well what i can say is iPhone speaker phone sucks to the max.... having the same problem sometimes only....

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Added on April 4, 2011, 10:23 amWell you can just buy the phone without contract as Maxis is offering it i think.

This post has been edited by iPlx: Apr 4 2011, 10:23 AM