has anyone seen this? My FP1U has started behaving weirdly just now. It has serious cellular networks problems, with the network unavailable after 1 call or SMS. These are the symptoms:
network unavailable to send/receive call/SMS after one or two calls/SMSs
no indication of network problem (reception bars full blue at top)
affected: call, SMS, 3G
wifi not affected
bluetooth probably not affected (can’t tell really: FP says pairing with Mac succeeded, Mac thinks differently)
not a SIM-card problem: SIM works in other phone, other SIM in my phone same issue, this time with indication of network problem (reception bars red)
I can see the name of my operator and I have full reception
problem frequently (but not always) goes away by switching off SIM and switching on again, after which I can call 1 number (sometimes 2) or send 1 or 2 SMS
Here is some possibly weird fields in the ##4636## phone information (not an expert, they just stand out to me):
cell info: (blank)
GSM-service: in use / GPRS-service: connection lost
Fairphone Kola Nut 1.8.7
Build W20-HL.V0035
My personal guess is, after dropping it occasionally over its 1.5 year lifetime the cellular chip and/or antenna is broken. If I’m correct this is located on the daughterboard, right? But it is just a guess as I have no diagnostic experience. Does anybody have any idea on how I can diagnose this problem?
Let me share the info that I have the same problem with my phone (Samsung Galaxy Ace) for a couple days now.
Symptoms for me were:
Suddenly no cellular network anymore
only emergency calls possible (but full reception)
after going into flight mode and back out of flight mode, network was found within seconds (even really good quality) but after some seconds or minutes it would disappear again
Even though this is the last thing you mentioned checking the battery is the first thing I’d do.
Go here:
and do the spin test and if the battery is not starting to bloat then try the battery software reset. A bloated battery can cause all kinds of problems, not just the obviously battery related ones.
The battery does not seem to be bloated, I’ll do a reset as soon as it has drained completely, although it seems fine now.
However, performing this test leads to another interesting observation. After removing the battery the time reverts to factory time and this is not reset by syncing with the network.
Interesting. The thing is that the network doesn’t disappear. Everything seems to be working, only I get no tone when I dial a number and then it stops without any error. Texting seems to take ages and then I get a delivery failed error. 3G the same, after w hill the app that uses the network gives up and notifies me of network issues.