what's the problem about china unicom SIM card? - Touch Diamond, MDA Compact IV General

when I use china mobile SIM card, everything is OK,
but when I change it to china unicom SIM card, the network logo should not be "G", instead of double arrow signal together with "X" signal.
why it show me this? ( but I can norlamly use my mobile phone in phone and GPRS and going to internet).
Could anybody help me?

did you put in the network settings for the other network ?
as in apn and username and the likes?

no, I find the netwrok automacticly, and select china unicom network,at first the network logo is OK like "G",
but after several minutes, it changed to arrow signal

Related

Phone Shows Roaming Sign When Abroad using a Local SIM

I've recently shifted to another country,
Used my o2 SIM for a day or two and obviously phone showed as Roaming, with the little "R"..
I've now bought a local SIM card and installed and running on a local Provider, yet the phone still shows as Roaming and Data does not work unless I allow Data connection while roaming...
Is this a bug or something?
I should state I've been in a different country recently and also used a local SIM from there and I never had this issue at all... I saw the local provider when using their SIM, Now, I use a local SIM and this still shows an "R" on my signal.. Same with my girlfriends phone...
Any ideas?
Edit: I'm on a N/W unlocked phone..
CJSlim79 said:
I've recently shifted to another country,
Used my o2 SIM for a day or two and obviously phone showed as Roaming, with the little "R"..
I've now bought a local SIM card and installed and running on a local Provider, yet the phone still shows as Roaming and Data does not work unless I allow Data connection while roaming...
Is this a bug or something?
I should state I've been in a different country recently and also used a local SIM from there and I never had this issue at all... I saw the local provider when using their SIM, Now, I use a local SIM and this still shows an "R" on my signal.. Same with my girlfriends phone...
Any ideas?
Edit: I'm on a N/W unlocked phone..
Click to expand...
Click to collapse
In my country there were 2 networks, and when a third network started it's business, it was using the infrastructure of one of the existing networks. The phones that were using Sim cards of the third network, all showed that they were in roaming, and if they wanted to use data, they needed to enable "data while roaming" options. Of course, they were never billed for roaming charges. Now this third network has it's own infrastructure, and the roaming sign is a thing of the past.
Maybe this is the case with you too.
I would try to contact the local network provider, to seek the answer you are looking for.
B.r.
d3m0n
I get this in Thailand because my provider has different names/IDs for the 3G and 2G networks.
The 3G is called "True-H" and the 2G "True Move", or something like that.
The SIM will automatically register on both networks, but if it connects to the 2G network I get the roaming symbol.
The solution is either to enable roaming data (I don't get charged any extra, but need to remember to disable it if I travel), or set my movie network to WCDMA only. This way it won't connect to the 2G network.
Sent from my GT-N7000 using xda app-developers app
Check if you got roaming allowed and switch it of.
Register if needed handset on your network manually.
You might not have the network where you are due to availability area coverage.
Check your apn settings, if they are on the mobile network you need and settings are correct. Perhaps from website provider, or helpdesk you can request them to send settings.
Go to settings, more, mobile networks and check there. Just explore a bit.
Sent from my GT-N7000 using Tapatalk 2
Cheers for the replies,
I'd already checked those areas out, APN is correct, Settings from Provider received and installed, Manually selected provider from the Network list...
Still showing 'R' - AS has been said 0 I'll just have to enable Data when Roaming and turn it off when I travel..
which service provider do you use and phone model do you use?
this phenomenon normally happen in new telco on some phone model

I9305 network problem 3 uk not working

hi there..got i9305 and its got a strange problem that every time i change the sim card it cant detect the sim cards automaticly and i have to search networks manualy and select it..then its works fine with all sim cards like t mobile phone o2 vodaphone but only with 3 sim it cant connect to network and always says mobile networks not avalible..
its was locked on EE and i used the free methoed to unlock it from xda..
please help to solve that problem
thanks
Go to Network Settings and set it to "WCDMA only" or "AUTO" mode. You CAN'T use 2G only for Three UK as it is 3G ONLY network. If this doesn't work then try different sim-card or try different Modem/Rom. Nothing else's coming to my head.
It's all OK here, 3UK as well, my i9305 was locked to T-Mobile but I've used a Unlocking Code from eBay and simlock is gone for good.
djembey said:
Go to Network Settings and set it to "WCDMA only" or "AUTO" mode. You CAN'T use 2G only for Three UK as it is 3G ONLY network. If this doesn't work then try different sim-card or try different Modem/Rom. Nothing else's coming to my head.
It's all OK here, 3UK as well, my i9305 was locked to T-Mobile but I've used a Unlocking Code from eBay and simlock is gone for good.
Click to expand...
Click to collapse
thanks for replying..i cant find any option to change it to wcdma only..where i can find that option in setting..?
Settings/More settings/Mobile networks/Network mode/Wcdma (+ gsm)
its got no wcdma and gsm option in more settings..it says 2g 3g 4g and other is 3g only..
i tried 3g only but still not connecting to network.
all other sim card working fine just no 3.
and thats what i want to use in it lol
silverbox750 said:
its got no wcdma and gsm option in more settings..it says 2g 3g 4g and other is 3g only..
i tried 3g only but still not connecting to network.
all other sim card working fine just no 3.
and thats what i want to use in it lol
Click to expand...
Click to collapse
GSM=2G, WCDMA=3G, LTE=4G..................
UK Three is a 3G ONLY so you need to set it up 3G ONLY... leave it for couple of minutes, if still nothing then re-install modem
thanks for your help again..just one thing where can i find just the modem for this model..?
thanks again..
Here http://forum.xda-developers.com/showthread.php?p=39162776
flashed the diffrent modem but still 3 network not working..

Roaming all the time

Hey guys.
When I insert my Fido sim card the R symbol shows up beside the signal. The funny thing is I have 5 bars even when I remove my sim card.
I have tried going to airplane mode, APN settings, and Data Roaming and Mobile Data are off.
My phone is rooted and it's running on Dmod V4. Also, I tried changing the CSC code (it's currently at KOR) but there are no options for a Canadian one.
Lastly, would I be able to change the XX in the baseband version or does that work with a Canadian carrier?

network problems

Hi,
i rebrand my P9 eva-l19C900 to c432 with success and i upgraded my android's version .. but i still have a problem with my network when i activate the 4g on one sim after twice minutes the second lose the signal and become deactived.
wakasensei said:
Hi,
i rebrand my P9 eva-l19C900 to c432 with success and i upgraded my android's version .. but i still have a problem with my network when i activate the 4g on one sim after twice minutes the second lose the signal and become deactived.
Click to expand...
Click to collapse
In Settings / Wireless & Networks / Dual SIM, see that only one SIM (you can choose which) can be 3G/4G
Hence one SIM will be on 3G or 4G, second SIM must be on 2G - but if your operator for that second SIM does not provide 2G you will not be able to use that SIM
In Settings / Wireless & Networks you can disable 4G and in Preferred Network type you can force GSM (2G) only - that way you can test which of the two SIM cards / operators provide/have 2G signal
zgfg said:
In Settings / Wireless & Networks / Dual SIM, see that only one SIM (you can choose which) can be 3G/4G
Hence one SIM will be on 3G or 4G, second SIM must be on 2G - but if your operator for that second SIM does not provide 2G you will not be able to use that SIM
In Settings / Wireless & Networks you can disable 4G and in Preferred Network type you can force GSM (2G) only - that way you can test which of the two SIM cards / operators provide/have 2G signal
Click to expand...
Click to collapse
Thanx bro...
But i didn't fond the way To force the second sim To 2g only.. can you help me plz?
wakasensei said:
Thanx bro...
But i didn't fond the way To force the second sim To 2g only.. can you help me plz?
Click to expand...
Click to collapse
In Dual SIM Settings you choose one which is 4G, the other will be 2G/3G
Cannot help you more, I have both SIMs 2G/3G/4G, hence no matter how I set, both work
Try playing yourself, test both SIMs one by one only, in one and the other slot, with various settings (4G enabled/disabled, Pref net 4G, 3G, 2G only)
Maybe you have problem with one of the SIM cards or one slot

MI 9/ network problems

Hello everyone,
I have Mi 9 M1902F1G 128gb with MIUI global 11.0.4. I am living in France and using Bouyuges telecom, recently when I come to work my phone loses network connection related to simcard. No calls, no 4G, no 3G nothing absolutely. There is a cross sign sometimes on network bar, then sim card activation process starts but no connection. Even I cannot send an sms. This is a new problem. I have been using this phone with same sim card for approximately for a year.
Thanks in advance
Okuw92
okuw92 said:
... recently when I come to work my phone loses network connection related to simcard.
Click to expand...
Click to collapse
Change job
Since you don't tell us what actions you already have taken the most obvious is to pull out the sim card and clean it. If this doesn't help, contact your operator to get a new sim card. Everything you say indicates that your problem is one with the sim card or the operator and has nothing to do with the phone.
okuw92 said:
Hello everyone,
I have Mi 9 M1902F1G 128gb with MIUI global 11.0.4. I am living in France and using Bouyuges telecom, recently when I come to work my phone loses network connection related to simcard. No calls, no 4G, no 3G nothing absolutely. There is a cross sign sometimes on network bar, then sim card activation process starts but no connection. Even I cannot send an sms. This is a new problem. I have been using this phone with same sim card for approximately for a year.
Thanks in advance
Okuw92
Click to expand...
Click to collapse
Have you tried with VoLTE disabled?
Also, by preferring network type 3G or even 2G, instead of 4G.
Maybe you recently got some some 4G/3G micro-station at work with the band not supported by phone
Edit: You could also try to inspect by Network Cell Info Lite, Net Monster, Net Monitor or similar apps available from Playstore

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