the sale person just simply say
just one thing i like to share with you, my fren bought a singtel iphone his case are same like yr wife mean the bill suddenly shoot up and he called maxis to cancel the 3G service but quite some time, maxis auto switch on the 3G without his concern...
he really damn last last follow below step(source took from lowyat ) :-

This is probably the most $$$ expensive problem most new iPhone users will encounter so it ranks #1 in this section. The EDGE connection is 'ON' by default on every iPhone. This will incur hefty charges to your phone bill if the connection is used by applications over long periods. If you actually want to use EDGE regularly though over 3G or Wi-Fi, you may want to look at signing up for unlimited data plans which you can ask your telco provider about.

Most of us don't use EDGE unless we need MMS functionality (Section 2: #??) so the fix is as follows.

a) For non jailbroken phones, enter any irrelevant text such as "nothing" or "disable" in the APN field (Settings> General> Network> Cellular Data Network> APN) to disable EDGE. Note: The technique of entering gibberish on the APN column might not work on the maxis network network anymore (since they are now the official malaysian carrier).
If u wanna change the APN, just swap it with another "non-official" service provider sim card (can do it while the phone is on) then go edit the APN setting to anything u want, and then swap back to "official" carrier sim card.


b) For jailbroken phones, you can download 'SBSettings' via Cydia and use those apps to disable EDGE. You can also use either of these apps to easily toggle On/Off for WiFi, SSH, 3G, etc.

Note that the EDGE (E) and GPRS (o) icons in the top-left corner of your iPhone screen will always be there whether or not EDGE is On/Off. So if you are feeling a bit antsy and just want to double check whether EDGE really is turned off, you can try loading a website in Safari or simply access your Weather application. Make sure 3G and Wi-Fi are also disabled. If an error message pops up saying there is no connection, you're safe.

This post has been edited by alexkwlee: Apr 7 2009, 04:08 PM

hey guys,

just like to know if we buy/sell our maxis set to/from 3rd party will maxis still give the warranty??

Tks

This post has been edited by alexkwlee: Apr 8 2009, 08:18 AM

but sure they know this phone is register under whose name right??
then will they still give claim if they found the phone owner is different even we got the service card??

to check phone no need the easy menu also can lah,

just key in *100# then press the call btn

then key in 7

then key in 2

that's all....