Xperia Z5 Dual - sim card & reception issues

[Ilan-XperiaZ5Du]

I have an xperia Z5 Dual.

Both SIM cards are from the same telco provider. Telstra 4G.

At times it works perfectly. both sims get reception, etc, etc.

Although too often I have a sim that's completely off the air. At the moment it's sim2, but earlier in the day in was sim1. I'm not really sure what's going on. I also get quite different reception indicators on each sim.

Somethings not quite right.

I'm not really a person that fiddles with things, but could I have tweaked a setting that's caused this?

[Uliwooly]

@Ilan-XperiaZ5Dual

Just wondering are the SIM cards, nano SIM cards? 

[Ilan-XperiaZ5Du]

uliwooly

Yes. They are nano sim cards.

  sim1 has been in use for quite a while in a couple of previous phones

  sim2 is brand new for this phone only

[Uliwooly]

@Ilan-XperiaZ5Dual

How is your network coverage? 

settings > about phone > status > signal

[Ilan-XperiaZ5Du]

uliwooly

Currently both SIMS are working (always the way), but very different signals.

  sim1::  -57 dBm / 28 asu (showing 4/4 bars). Mobile Network Type - UMTS.

  sim2::  -101dBm / 6 asu (showing 2/4 bars). Mobile Network Type - EDGE.

[Ilan-XperiaZ5Du]

uliwooly

For completeness I should also add, that sim2 is my "SIM card for data traffic".

Currently both SIMS are working (always the way), but very different signals.

  sim1::  -57 dBm / 28 asu (showing 4/4 bars). Mobile Network Type - UMTS.

  sim2::  -101dBm / 6 asu (showing 2/4 bars). Mobile Network Type - EDGE.

[Uliwooly]

@Ilan-XperiaZ5Dual

That's not a good coverage, you might want to double check the APN settings and contact your carrier/network 

[ashishsingh007]

APN setting won't help with coverage.

Try selecting 3g network or 4g for sim 2.It's seems your sim 2 doesn't have good 2g coverage at your area however your LTE does have. Or you could put both on auto mode.

[XperiaZ5fan]

dont wrry all z5 have bad resecption.

i have z5c and the reception is so ppor to a degree where even when i am out the reception is only two lines or none.

[Uliwooly]

@ashishsingh007 @XperiaZ5fan

Don't assume that its the phone, are you using a protective case? if you are remove it and check the following 

settings > about phone > status > signal strength 

Also check your with your carrier/network if there are any coverage issues.