Using 4G causes No Service (Dual SIM)

[EmptyArea]

Is anyone having their phone service (calls and data) drop when using 4G?

I have tried every combination of 3 SIM on different networks (O2, EE and Three), each one in each slot, each pair in both slots; when limited to 3G all SIMs work fine and have full, stable connections. Every time I set either SIM slot it be 4G preferred, phone and data for that SIM will drop every few minutes. Before the update I got a "no service" notification, now the bars show as empty. Before the update the connection would come back, go back to 4G, and then drop out again after a short time; after the update the signal comes back but the connection often stays at 3G (and data + phone stay fully connected.)

I have tried this at two locations 10 miles apart, and a few stops in between.

Is my handset broken, or is this software related and all similar users have the same problem?

Thanks.

 

[Frances91]

Could be that your location has a weaker 4G signal or that you have LTE ONLY mode on in another setting/module.
I have had no issues with 4G connectivity, and that's likely because I have a strong reception at my location.

If you haven't already, I'd suggest checking details of your connection through a 3rd party app such as LTE Discovery (available on playstore). Though Googling for LTE Bands supported on XT1643 brings up several mentions of it supporting 5 bands (including the faster 2300MHz band 40) while checking the inbuilt Motorola program menu LTE settings, I found only four listed, 1,3,5,8, which I haven't yet probed on. Going by my ul/dl which maxes out at 6/17 megs, and my carrier offering bands 3,5&40, it looks like I am one of the first two.

Another option could be using the OpenSignal app and checking for how you measure for different protocols, signal reception and latency, all of which are decisive in how your phone goes about switching and selecting network. As for the compatibility, Moto G4+'s Snapdragon 617 SoC has LTE support baked in, as has been the case for past several Qualcomm chips. So unless, all factors such as network settings, signal strength and carrier configuration have been tested to be optimum, it doesn't look like this is a device related issue.



Sent from my Moto G4 Plus using XDA Labs

 

[EmptyArea]

Thank you for replying, it seems like you misunderstood me, I'm not talking about the data connection, I'm talking about the standard signal.

Even in 4G preferred mode it will scale down to 3G, so it's not the data signal that's at question, why would the standard phone signal drop or completely go ("no service") i.e. no calls, only when 4G preferred is selected?

 

[EmptyArea]

Bump for the recent update to the OP. Thanks lovely people. 10chars

 

[aslezak]

inbuilt Motorola program menu LTE settings?

How did you access the inbuilt Motorola program menu LTE settings?
I have a Moto G4 Play and am having a hard time finding this menu!

>>while checking the inbuilt Motorola program menu LTE settings

Could be that your location has a weaker 4G signal or that you have LTE ONLY mode on in another setting/module.
I have had no issues with 4G connectivity, and that's likely because I have a strong reception at my location.

If you haven't already, I'd suggest checking details of your connection through a 3rd party app such as LTE Discovery (available on playstore). Though Googling for LTE Bands supported on XT1643 brings up several mentions of it supporting 5 bands (including the faster 2300MHz band 40) while checking the inbuilt Motorola program menu LTE settings, I found only four listed, 1,3,5,8, which I haven't yet probed on. Going by my ul/dl which maxes out at 6/17 megs, and my carrier offering bands 3,5&40, it looks like I am one of the first two.

Another option could be using the OpenSignal app and checking for how you measure for different protocols, signal reception and latency, all of which are decisive in how your phone goes about switching and selecting network. As for the compatibility, Moto G4+'s Snapdragon 617 SoC has LTE support baked in, as has been the case for past several Qualcomm chips. So unless, all factors such as network settings, signal strength and carrier configuration have been tested to be optimum, it doesn't look like this is a device related issue.



Sent from my Moto G4 Plus using XDA Labs