Mobile Data Disconnected

[Anonymous]

I am currently in China using an HTC One M8 which I had on an O2 contract when I was in the UK. O2 helped me unlock/unlatch the phone before i came out here, but using a China Mobile 4G sim I'm unable to pick up 4G at all. In the Mobile Data option of Settings, the only option is the 'Disconnected' option. Does anyone have any idea how I can get 4G on my phone in this situation?

[MI5]

Did you specifically say you were going to use China Mobile and ask them if it would work on 4G?
Looking at the frequencies used in China, some of the other networks use 2300 mhz which would work with your phone OK.

[Anonymous]

They probably said that so you could unlock the device & put a local Chinese sim in it

[Anonymous]

Which mainland Chinese network works on 2300Mhz? And this will work with 4G on the HTC One M8?

Sorry for demand for extreme clarity, I've just spent the last hour talking to an Indian brick wall in the O2 Chat; maybe a Chinese Wall would've been more appropriate.

[Anonymous]

Yes, in hindsight I should've asked more questions, but then I'm not in the mobile phone business, just an ignorant sucker.

[MI5]

According to the specs, your phone will receive 4G on the following bands:
LTE band 3(1800), 7(2600), 8(900), 20(800) - EMEA
Again, according to info on internet (no personal experience so I suggest you check with the networks) the following providers have 4g on these frequencies:
4G LTE HKT 1800/2600Mhz; 4G LTE Hutchison 1800/2600Mhz; 4G LTE SmarTone 1800Mhz;
Therefore, HKT, Hutchinson or Smartone SHOULD all work.

[Anonymous]

As far as I know there are only three providers in mainland China and those you mention are not them, most likely Hong Kong based and not viable options.