Mine does this too, go into settings and turn off 3G..
Hello,
If you're iPhone is having calling issues, there are a few things to check.
1. Make sure you're within your provider's coverage area. This is the #1 issue that affects many iPhones. Also, large metropolitan areas (like New York or San Francisco, for example) have such heavy iPhone use that the carrier's services can be affected by too many users.
2. Try rebooting the iPhone, this sometimes resets everything and gets the signal back.
3. Double-check the Settings and verify that you do not have Airplane mode enabled. Airplane mode effectively blocks all radio transmission (Edge/3g/Wifi/Bluetooth) until disabled.
4. Have you recently upgraded your iPhone's firmware OS? If so, might be the cause. Try updating it again by connecting it to your computer, opening iTunes and clicking on the Restore button. This might reinstall a necessary driver for your iPhone to function properly.
5. Is your iPhone jailbroken/unlocked? If so, this too can have serious affects on your calling ability. Especially unlocking as your baseband (the software used by the modem which communicates to/from) is modified for use by Non-AT&T carriers. If this happened after a jailbreak/unlock, I would recommend restoring the firmware OS by following the steps in solution #4 and then retry jailbreaking/unlocking the iPhone with Blackra1n.
6. Depending on the age of your iPhone, there may be a faulty logic board or modem. If this is the case, the iPhone will need servicing by Apple or a replacement by AT&T (if under warranty).
As far as I can tell, this is not a network issue. I have come to this realization slowly as my reaction was to blame AT&T since I have had issues with them on other phones and the arguments about the iPhone clogging up their network seemed to make sense. But after trying a bunch of suggestions by the AT&T folks including replacing my sim card, I have had no luck. Researching this issue a bit further, it appears to be a global issue with iPhone users from other countries having similar problems. Also, I carry a Blackberry for work and 9 times out of 10 or better, I can make a call on the BB when I cannot on the iPhone.
Unless worldwide carriers have put the iPhone on a special network that is insufficient for the data mass being used (highly unlikely), I think evidence points to the phone as the issue. Rumors about the 3G iPhone using an antiquated radio chipset for the phone seems plausible to me. I read something about this on some other posts.
Since I have the BB, I generally deal with the network headaches and overall, I have a good experience with most aspects of the iPhone.
I will try keeping the 3G off, but that is kind of a bummer... Like getting a cool car and keeping it in the garage.
Call att maybe replacement sim
Just to say i have the same problem date caller id etc has not resolved not able to make or receive calls so getting a bit stuck now
SOURCE: Which IPhone 3G Case do you like better?
Based on trying a few iPhone cases, I would look for an iPhone case that:
- doesn't have a cover flap. Lifting the flap every time you use the phone gets annoying
- prevents skidding. The iPhone can easily skid off a table; you can lose it or, worse, break it.
- has a screen cover that doesn't reflect or refract light in awkward ways
- has a screen cover that doesn't get dirty easily.
Many covers may have these qualities. One combination I have tried and liked is:
- the "white gel case" at the AT&T store (about $20)
- the "screen protector tri-pack" also at the AT&T store (about $10)
SOURCE: iPhone 3g activesync
Your iphone can not be synced with activesync, it must be synced with itunes! I've tired and can not get it to work! only itunes!
SOURCE: iPhone 3G keeps saying 'bluetooth unavailable' and 'No Wi-Fi'
If iPhone won't turn on, or the display freezes or doesn't respond
More resets:
Try This:
1. Remove Sim Card
2. Hold in 'Home' button and 'On/Off' button together until Apple logo appears
3. Replace Sim Card
4. Hold in 'Home' button and 'On/Off' button together until normal phone screen appears.
Also, Try this:
1.) Shut down the iPhone 3G.
2.) Start up iTunes
3.) Hold down HOME button on the iPhone 3G
4.) While keeping the HOME button depressed, plug in the Sync cable
5.) A message will pop up to ask if you want to reset.
6.) Just click YES and the reset process should start.
I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309
SOURCE: Shutter doesnt work on my iphone 3g
Find your solution from the list,
Apple Iphone Smartphone
Codes:
Software & Hardware Problems
Find Your Solutions for other Apple Products:
Apple Iphone 3G
Apple iPod Touch Digital Media Player
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