Takes 30 minutes or more to get network

Help Fairphone 4
1

My phone takes 30 minutes or more to get network connection after I restart or change the battery.

If I leave the phone standing for about an hour, everything works fine. This is not just an internet problem (5G/4G etc), it’s the entire network (phone calls, SMS, etc do not work either)

I have reseted network settings including APN. The problem is still the same

If I try to select the network operator manually, it does not work either.

How can I troubleshoot this?

Thanks!!

2

Do I understand you correctly that your problem is exclusively with the mobile network connection, not with WiFi?
Some things that come to mind:

  • how good is the connection quality once the network is actually connected, i.e. how many bars?
  • does this happen everywhere or only in a particular place like at home?
  • any other mobile devices that have issues with this in the same location?
  • does the phone actually show a missing mobile connection or does it “just not work”?
  • did you try limiting network preferences to something lower than 5G to see if that changes anything?
  • are network operators shown relatively quickly after you select the manual option or do you also have to wait for a long time for them to show up?
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3

How old is your SIM card? Perhaps you have get a new one.

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4

Thank you very much all!

  • My sim card is 5 years old, but it works fine in a different phone (a Nokia X20)
  • It happens everywhere, even in other countries
  • Other devices work fine, even with the same SIM
  • I tried to lower the 5G, but it has no effect, because it does not connect at all (SMS, calls, etc)
  • Now Network operators show up quickly, I have had times where it takes quite some time.
  • At the moment, where I am standing is -114 dBm. With the same SIM card in the same space, a Nokia X20 has -113 dBm 26 asu and it catches network immediately

Thank you very much for your help!!

5

The fact that your SIM card works fine in another phone unfortunately doesn’t mean anything.
Fairphone is quite sensitive where the SIM card is concerned.
So I would advise you to renew a SIM card that is 5 years old.

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6

Thank you for your answer @Lidwien !

I changed to an e-sim, and I am having the same problem as before :frowning:
Is there any way to figure out what is the phone trying to do when connecting to the network? Aren’t there any more detail logs?

Thanks,
Carlos

7

You might try to check logs via adb on an USB connected computer or try out “MatLog Libre” (can be installed via F-Droid) on the device itself.

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