[Q] SGP 321 No internet mobile cellular. - Xperia Tablet Z Q&A, Help & Troubleshooting

Hi
I have Xperia Z tablet SGP 321 from yesterday I have no internet thru my cellular network. It happened once before but it was sorta different last time I didnt had any reception I searched and searched I couldnt find any network that I could register. This time I have full reception but no internet. No H or H+ eller 3G I just see there is reception. I have no problem with Wifi its working as it is. What could be the problem... as when I tried that sim with another phone it works and when I try another sim with internet that works aint working in Xperia Z so it must be the tablet. All apn and other settings are as it is nothing is changed.. why did it stop suddenly?

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Did you guys ROOT your phones? if yes, by which method?
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thanks!
I have the same issue, i can text and phone no problem. Wifi connections work great but my phone doesn't even see data over the network.
Im on mts in manitoba Canada.
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[Q] No 2G Signal on Xperia Ray

I hope someone can help me with this, I've been having major problems with 2G/GSM coverage on my Xperia Ray.
Basically, I have 2 Xperia Rays and 1 SIM card. 2G is not available on one Ray in my home area. In fact, it's not even shown as an option in the 'Network Operators' but I can see 2G available for other networks in the menu. 3G/WCDMA coverage seems to be unaffected. My other Xperia Ray (using the same SIM card) picks up 2G at home no problem.
Now here's the weird bit, if I leave my home area (e.g. if I'm in the city a couple of miles away) the affected Ray has no problem at all with 2G coverage, it works perfectly! Once I return to my home though, 2G is 100% unavailable. And as I said, 2G works perfectly on my other Ray and all other phones using the same network in my home.
I spoke to someone in my network (O2) and they assured me that it's nothing to do with the IMEI number the affected phone falling foul of my local mast as regards 2G coverage, so what could the problem be? It's not a SIM card problem, and the fact that 2G works perfectly everywhere else seems to indicate that it's not a problem with my phone hardware either.... I have an unlocked bootloader so PC companion & SUS aren't doing any good, and flashing a new ROM/Kernel via Flashtool hasn't resolved the problem either, darn it.
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Not receiving text or calls when connected to wifi

Hi Guys,
I have a weird issue. i bought my Xperia Z2 on 12th of August. my network is 4G LTE . I noticed that when i am connected to WiFi i don't receive any calls or text. But when i disconnect WiFi i get missed calls notification from my operator.
I Googled the issue and found out that some people has exactly same issue woth virgin mobile UK.
Someone suggested me manually switching to 3G network and see if that work or not But i had the same issue with 3G network mode while connecting to WiFi.
I took my phone to Sony customer service center. The guy there said it is your network problem but i dont think so since i am using the same number on Samsung s4. He did mentioned something related to Sony Signal strength is week etc.
Regards

4G problem

Hello to all.
I have some data issues with my Z2.
I'm on t-mobile HR (croatia).
So, if the phone is set to preffer LTE data network and when I leave WiFi network the phone can't connect to data network, if there is no LTE network. Than I must set the phone to preffer 3G, phone connects to 3G or 3G+, and than to 4G when I set it to preffer 4G again.
When the phone is set to preffer 3G than if I leave WiFi the phone immediately switch to 3G.
In both casses, after the data network is found (3G, 3G+) and I set the phone to preffer the LTE phone switch to 4G.
I foud this problem since the phone is updated to 4.4.4 Kitkat and now I'm on 5.1.1. Lollipop (.264 version) and the problem still persist.
Please help me to solve it because it's really annoying.
And yes, the whole area is covered with 4G signal, but sometimes is weak.
Zoran81 said:
Hello to all.
I have some data issues with my Z2.
I'm on t-mobile HR (croatia).
So, if the phone is set to preffer LTE data network and when I leave WiFi network the phone can't connect to data network, if there is no LTE network. Than I must set the phone to preffer 3G, phone connects to 3G or 3G+, and than to 4G when I set it to preffer 4G again.
When the phone is set to preffer 3G than if I leave WiFi the phone immediately switch to 3G.
In both casses, after the data network is found (3G, 3G+) and I set the phone to preffer the LTE phone switch to 4G.
I foud this problem since the phone is updated to 4.4.4 Kitkat and now I'm on 5.1.1. Lollipop (.264 version) and the problem still persist.
Please help me to solve it because it's really annoying.
And yes, the whole area is covered with 4G signal, but sometimes is weak.
Click to expand...
Click to collapse
I had the same problem, i flashed eXistenZ rom now and it didnt reoccur. If it reoccurs ill tell you
MathieuBerger said:
I had the same problem, i flashed eXistenZ rom now and it didnt reoccur. If it reoccurs ill tell you
Click to expand...
Click to collapse
well, I don't feel confortable with rooting my device and flashing custom software..it would be great to solve the problem without that

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