Chatty stops receiving SMS after sending an SMS
This issue was first published as https://gitlab.com/mobian1/issues/-/issues/215 and later on https://gitlab.freedesktop.org/mobile-broadband/ModemManager/-/issues/299. On the MM page it seemed that we triangled the problem to Chatty. Here are my experiences:
I'm on Mobian+Phosh on PinePhone, latest version as of 2021-01-04 (just did apt update && apt upgrade). Update: system was updated on 2021-01-10. Receiving SMS is unreliable. I'm using a T-Mobile SIM in Hungary. Mobile setting currently is 2g/3g/4g (4g preferred). 2g only, 3g only, 4g only, 3g/4g (pref:4g) was also tested.
Actual problem: The problem after some debugging (see in the ModemManager issue) seems to be that after sending an SMS from Chatty, it is unable to receive more. These issues does not surface when Chatty is killed. I could reproduce the issue anytime by sending an SMS (or more) from another phone, replying to it, and no more SMS arrives. I tried sending SMS from other numbers as well (bank 2FA) with the same result. When Chatty was shut down, sending has no effect on receiving the SMS messages.
No MMS were sent from the phone and to be fair I haven't received one in years.
Thanks in advance for looking into it! Gergely