I took a nexus 5, 6 months back, i had updated it to 4.4.4. Since yesterday it ws behaving wierdly. My network would just drop and then upon searching for networks under mobile networks, i was able to reconnect bt suddenly it jst stopped working. i wasnt able to connect to any cellular network on any sim card whereas the same sim card was working on other devices. even on searching for mobile networks i couldnt find anything. i tried every possible thing, i switched to android L, and even downgraded my phone to 4.4.2 bt absolutely nothing worked (i knw that means unlocking my bootloader and i have lost warranty but i had to try something). please help me out, this is getting toooo annoying (P.S i dropped my phone once, got a very minor bump, is there by any chance a hardware issue due to that?) it is connecting to wifi network and bluetooth perfectly
If you've flashed a clean stock image, then unfortunately it's likely hardware. Antenna may have been damaged when it was dropped.
Or its a carrier issue. Or Sim. Did you try a friends Sim that's the same size?
I've been having fun same problem got the past week or so. I'm on T-Mobile and I have had no service, or service dropping to "H." Mostly it's just no service, then "low" service.
Is anyone else having this problem?
I've got a dual SIM SGS6 from Expansys AU (based in HK). I've got a new nano SIM card in SIM1 slot, SIM2 is empty. I've transferred my service across to the new SIM and confirmed (using an adaptor) that I can get 4G service fine on my Nexus 5.
However on my SGS6 it only shows 3G, H or H+, never 4G. I also find that every few minutes the data connection goes completely. I happened to be in the dual SIM menu at the time and noticed it went from showing only SIM1 being present to both SIM1 and SIM2 being lit up - as you can see this corresponds with the phone showing 'no signal' in the notification tray. It also keeps on sometimes showing the message "When changing SIM Card, Data service slot also can be changed. When you want to change Network mode, please go Mobile network menu and change it." (poor grammar all Samsung's!)
Has anyone seen this before or is it going to be a case of having to ship it back to them?
alanjrobertson said:
Is anyone else having this problem?
I've got a dual SIM SGS6 from Expansys AU (based in HK). I've got a new nano SIM card in SIM1 slot, SIM2 is empty. I've transferred my service across to the new SIM and confirmed (using an adaptor) that I can get 4G service fine on my Nexus 5.
However on my SGS6 it only shows 3G, H or H+, never 4G. I also find that every few minutes the data connection goes completely. I happened to be in the dual SIM menu at the time and noticed it went from showing only SIM1 being present to both SIM1 and SIM2 being lit up - as you can see this corresponds with the phone showing 'no signal' in the notification tray. It also keeps on sometimes showing the message "When changing SIM Card, Data service slot also can be changed. When you want to change Network mode, please go Mobile network menu and change it." (poor grammar all Samsung's!)
Has anyone seen this before or is it going to be a case of having to ship it back to them?
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Aren't the dial sim versions intended for the Chinese markets? If that's the case, you may not have the correct LTE radio bands for where you live.
Doesn't seem to be that - the bands fit according to the specs and at some points it does connect properly to 4G/4G+ - it just doesn't hold it
Maybe damaged SIM??
Don't think so - it's a brand new Nano SIM direct from the network and works stably in 4G on my Nexus 5 (with a nano to micro adaptor).
Managed to get 4G/4G+ working for a while yesterday and today, but has now stopped working again.
Get a message everytime the phone boots re. network manager (as posted in OP), which doesn't seem right to me. Also finding it still drops all network connections from time to time and even switched off totally at one point today. I've gone back to the retailer requesting a return either for full refund or exchange for replacement.
What was the outcome?
alanjrobertson said:
Don't think so - it's a brand new Nano SIM direct from the network and works stably in 4G on my Nexus 5 (with a nano to micro adaptor).
Managed to get 4G/4G+ working for a while yesterday and today, but has now stopped working again.
Get a message everytime the phone boots re. network manager (as posted in OP), which doesn't seem right to me. Also finding it still drops all network connections from time to time and even switched off totally at one point today. I've gone back to the retailer requesting a return either for full refund or exchange for replacement.
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Thanks for your posts Alan I am having similar issues with 1 day old Galaxy S6 dual sim in Australia with Telstra.
- Phone loses connection to carrier (both) from time to time - especially if in the sim manager screen but also just randomly
- It looks like it is seeking a network - like polling through different bands
- if i watch it for a while i can often catch it doing this
- on 4 occasions in a day this has then reboot the phone
- it has not yet dropped out during a call - not sure if this is just luck
- I am asking for it to be declared DOA but not sure how that will go yet
I was wondering if you returned or swapped your phone or found a fix.
Thanks
Dodgyd-AU
Sadly that sounds pretty similar to my experience I ended up returning it (although am having ongoing issues with the retailer, Expansys, in getting a full refund!) and subsequently bought a single SIM model direct from Samsung.
Hello everyone,
My mother owns a Nexus 5. Some days back her phone hanged so we waited till the battery depleted and it turned off. On turning it on we noticed that the phone didnt get any network. Tried almost everything but nothing worked. Then I switched to a test sim and the phone could catch the network but didnt work again once I inserted my mom's sim. We got a new sim but the same issue ( test sim and actual sim are on different operators). Can anyone recommend a solution?
Hi i have a nexus 5 android 6.0.1 and whenever I make or receive a call the network drops from LTE to 3G to Edge. It stays on Edge even after the call has been ended and the only way to goes back to LTE is when the phone is locked for a few minutes. I checked the settings number cellular networks -> preferred network type and its on LTE. I have done a complete wipe on the phone twice and still the same issue.
Also in the past I have another issue which was resolved and I have had this phone for about 2.5 years and after the first 6months the sim was unreadable. The person I got it fixed from stated that the guy I bought the phone off reported it stolen and the only to use it was to switch the motherboard. Im not sure if they are related .
The main issue the network dropping down to Edge is causing is when I drive for uber and passengers call me sometimes I cannot start the trip or load the gps for a few minutes .
This is because of CSFB functionality. LTE is used only for data connection and if you receive or place a CS voice call, then the phone switch to 3G or 2G (depends from signal strenght) to make a call and after that if signal is strong enough switch back to LTE.
Have the following issue with g930fd s7 dual sim
When restarting phone mobile data will work at lte speed for a few minutes but will then switch to show 3g but mobile data will not work.
This happens from both sim slots.
By switching sim slot and restarting phone some times the problem goes away but will come back if mobile signal lost and regained.
There is full mobile coverage.
Have tested sim card in s6 dual without any problems.
Anybody has any idea how to help as had to switch back to my s6.
Thanks