daixiya
Sounds like you're still mucking around with China Mobile. Not sure how to do this on the samsung - but you have to disable 3G data mode to get your phone to "talk down" to the EDGE/GPRS system.
论坛
How to get the 3G / EDGE / GPRS work?
no, if you're using a WCDMA/GSM (standard 3G/2G) phone you don't need to disable 3G to get 2G, although it can't hurt to do so since you won't be using it - you may save battery and time as it won't bother to look for a 3G signal. However to use 2G only you just need to be away from a 3G (WCDMA) signal and it will default to 2G (EDGE/GPRS). As China Mobile uses TD-SCDMA for 3G you will never be on a 3G signal that your phone recognises so it will always default to 2G. Take it into a China Mobile shop and let them have a look or call them up - you may need to get something activated.
The APN is cmnet.
CMWAP is for older phones that only do WAP browsing. For the full internet, which I'm sure is what you want, its cmnet with no gateways, usernames or any other details - they are all blank I believe.
If its not working take it to a China Mobile shop and get them to sort it.
Greg
He's got a 3G-WCDMA phone on China Mobile's 3G (TD-SCDMA). He MUST disable 3G on his 3G-WCDMA mobile otherwise his 3G mobile will try to connect over China Mobile's 3G-TD network, which will fail.
thanks greg.
i was told the gateway setting was needed for both cmnet cmway when i was still using china mobile 2 years back in shanghai and shenzhen. china mobile's 3G and gprs at that time sux, it was so unstable that it was sort of swinging back and forth between 3g and gprs, virtual no connection at all even sitting near the window in a high rising with great view. the only way to make it useful was to switch back to wap. :-( that was the reason why i ditched China mobile. :-)
hi laotou, i'd be surprised if that is the case as all WCDMA phones are designed to go to EDGE/GPRS when 3G fails. A WCDMA phone wouldn't even notice a TD-SCDMA signal just like it doesnt notice the CDMA/EVDO signal from China Telecom. That its a 3G sim card wouldn't matter. If the phone can't find what it thinks to be a 3G signal (WCDMA) it will look for 2G. If the package from China Mobile also includes 2G usage (which I think they do) then the phone will fail to find WCDMA (it doesnt even notice TD-SCDMA) and then look for EDGE, if it can't find EDGE it will look for GPRS. If it can't find GPRS it will be voice and SMS only on GSM.
I'm willing to be proven wrong but I'm fairly sure thats how it works. :-)
Having said all that it can't hurt to turn off 3G, infact it may make the phone connect to a network a few milliseconds quicker as it won't look for a WCDMA signal.
hi guys can someone tell me were i can gat a iphone 3g jailbroken and unlocked in kunming?
Greg
YOU may be right! On my ancient iphone 3G, it's a manual setting. The 3G networks and the 2.5G networks (gprs/edge) are separate accounts for most operators and completely different kinds of networks. 3G may not necessarily ramp down if the billing isn't set correctly, meaning he may not authenticate properly (or at all) on the 2.5G networks.
So, the problem could be an improper phone setting, incorrect billing information, or China Mobile might even have just outright blocked his phone, in addition to other more normal things.
GOLFER31
I'd suggest taobao.com or jinli.com, to name a few. Taobao is national, jinli is somewhat more local. Just beware the fakes - that's the purpose of alipay - kind of an escrow account until you confirm the shipped phone actually works and is a genuine apple hacktivated product.
If you got the cash, you can opt for Unicom's "¥7k prepaid 2 year contract, get an iphone 4 free" deal (if you consider paying about USD 1k+ for a 2 year contract and an iphone 4 bundle a deal - and don't forget you have to get the anti-grip-of-death case).
yeah, it could be China Mobile trying to force people with a 3G package onto TD-SCDMA, hadn't thought of that. A very strange thing for them to do though as surely spreading it amongst 2G/3G will put less strain on either one. And they do specifically advertise that the phones they sell are dual mode (TD-SCDMA/GSM) so they'd be contradicting themselves - not entirely surprising!
I'm surprised to hear that about your iphone, my 3GS selects automatically and I know people with iphone 3G in the UK and it definitely selects 2G at times (most of the UK countryside doesn't have a 3G signal so a phone that didn't automatically choose the best available signal wouldn't be a success). Must be something China-specific. Wouldn't surprise me.
By the way, if you get the China Unicom iphone it isn't the same as the international iphone. You'll get a messed up maps app and no youtube app unless they've corrected this since.