[Completed] [Q] Rooted Huawei Y550 - No Signal - No Network Connection - XDA Assist

I recently bought a Huawei Y550 in the UK and returned to Japan (where I live)
In Japan I can connect to local networks (Docomo 4G) using my UK EE sim card but when I insert my Japanese (AU-KDDI) sim card it won't connect to a network - selecting the KDDI 4G network gives the error 'can't connect to the network at this time. Please try again later' (or something like that). I get the same error when using the various APNs available.
When the phone lists the networks with my UK sim inserted, Docomo has a 'tick' next to it and the other networks have a 'plus' symbol next to them. When I insert my Japanese sim, KDDI has a 'plus' symbol next to it while all the others have 'no access' symbols next to them. (Image attached since I can't insert links as a new member.)
I was under the impression that if my phone was sim locked I would be asked for a code when the Japanese sim is inserted but I have full function of the phone (all apps, wifi etc) with that sim inserted; I just don't have a mobile network connection.
Not sure if it makes any difference but this phone is rooted. The problems were the same before and after rooting.
My question is: How can I get this phone to work on the KDDI network?
Thanks!

Hi,
You likely do need to sim unlock the device. Probably from a website that does it for a fee.... If they can do your device. As for how to do it, I can't find anything relevant on XDA about this. You can try asking in this thread,
> Android Development and Hacking > Android Q&A, Help & Troubleshooting > [Q] Possible to root Huawei Y550?
If that doesn't help, you will need to ask for help here, or try a google search,
> Android Development and Hacking > Android Q&A, Help & Troubleshooting
Good luck!

Darth said:
Hi,
You likely do need to sim unlock the device. Probably from a website that does it for a fee.... If they can do your device. As for how to do it, I can't find anything relevant on XDA about this. You can try asking in this thread,
> Android Development and Hacking > Android Q&A, Help & Troubleshooting > [Q] Possible to root Huawei Y550?
If that doesn't help, you will need to ask for help here, or try a google search,
> Android Development and Hacking > Android Q&A, Help & Troubleshooting
Good luck!
Click to expand...
Click to collapse
Thanks for your help. I have extensively searched google and only found companies that will unlock the phone by sending a code but my phone doesn't ask for a code when I insert the new SIM card so I don't think it is an option.
I will try asking on the thread that you suggested - I am already following that thread (that's how I rooted my phone) but it is only really about rooting the phone and I wasn't sure about posting off-topic.

You can ask, worse they can do is not answer.
Or try the second section I linked. ?

Darth said:
You can ask, worse they can do is not answer.
Or try the second section I linked. ?
Click to expand...
Click to collapse
Thanks. I started a new thread in the second section you linked.

Great! ?
Thanks, thread closed.

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R_a_z_v_a_n said:
Good luck
Click to expand...
Click to collapse
Thanks for your assistance. Was able to solve it for myself by manually selecting the network (T-Mobile 3G). Now it works even after switching back to automatic network discovery.

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