making calls takes a very long time (if its works)

[Val1]

Hello,

I just bought a brand new Xperia XZ1 Compact (yes it's an old phone).

Unfortunately, making calls takes a very long time: from the moment I press call to when it actually starts ringing, it takes about 20 seconds or more. And one time out of two, the call is even aborted.

I tried my SIM card in another phone, and there were no issues; it worked normally. So the problem must be with the phone.

I'm wondering if the issue is because this phone was intended for the Japanese market. Indeed, since I started using it, it keeps prompting me to add the international dialing code for Japan with every call (for no reason since I am in France). Also, in the international call assistant, all the country names are written in Japanese even though the entire phone is set to French...

If anyone has an idea about the problem and how to fix it (if it can be fixed!) i'll take it !

Thank you!

 

[B. Diddy]

Welcome to Android Central! What's the exact model number of the phone, and what carrier are you using? From that information, we can try to cross-reference the network bands that the phone supports and the bands your carrier uses. If there isn't much overlap, that could explain why call performance is poor.

Japan has historically had significant differences in their cell networks compared to US and other Western countries, so compatibility was often an issue. It might be better these days, but since you have a 7 year old phone, that technology may still be hobbled by those incompatibility issues.

 

[Val1]

Thank a lot for the insight !
Here my serial number : g8441 BH908GQS9G (i do not know how to determine the network bands the phone supports).
My carrier is Free.
From wiki it used : 700Mhz(lte) 900Mhz(gsm umts) 1800Mhz(gsm lte) 1900-2100 MHz (lte)

 

[B. Diddy]

The model number (not serial number) is what I'm looking for -- you should be able to find that in the About Phone menu.

 

[Val1]

OUps sorry,
so I think the model number is g8441. But from this website i think the g8441 is design for Western country (the SO-02k is the japanese model). So the issue is not related to this, right ?
Could it be a hardware problem (defective chip?), or is there still some OS configuration (or something else software-related) that could be responsible for my problem?

 

[B. Diddy]

Assuming this is the non-Japanese variant, it ought to work. But it's suspicious that a lot of things show up in Japanese. I wonder if it might actually be the Japanese variant, and someone flashed the G8441 ROM.

Can you show us a screenshot of the Settings>About Phone menu, so we can see what it says under Model Name? Also, do you have the original box the phone came in? If so, look at the sticker on the box to see if that has a different model number or serial number than what shows up in the menu.

 

[Val1]

I'am afraid you right... I check the IMEI :
SONY G8841 PM-1060-BV
the IMEI is th same on the original box (maybe not so original) and in the About Phone menu.

from a thread from XDAforum (I cannot link the thread due to forum's spamblocker ) PM-1060-BV is SO-02K ( G8441 is PM-1061-BV). So the IMEI information is not consistent... the model number G8441 is not consistent with the type number PM-1060-BV... To make it short the thread from XDAforum inform that someone ROMs hundreds of S0-02K in G8841... there is only the number type (PM-160-BV) which is not falsified.
From frequencycheck website there are indeed differences between both model, not much but still...I have to check which frequency my carrier used next to me...

Thanks a lot !

 

[B. Diddy]

Nice detective work! I don't know all the technicalities of using a Japanese variant in France, but even though the band support might be ok, there might still be some modem issues that are responsible for the lag you're seeing.

Incidentally, I edited your screenshot to block out the IMEI -- that's something you shouldn't share publicly.