a single APN for web, sms and mms
To avoid the need for 2 APN, I kept the one that allowed me to have access to the internet and I deleted the other one (the one that allows to send MMS), then I set chatty as follows:
MMSC=that of the MMSAPN (the 2nd APN that I had deleted)
APN=web access
PROXY=that of the MMSAPN (the 2nd APN that I had deleted)
The information was given in the forum of my provider.
Today it works and I can send and receive MMS.
For this to work, it is obviously necessary that access to mobile data is activated: be careful sometimes after a restart it remains checked when it is not.
I thank all the developers for their efforts and perseverance.
MMSC=that of the MMSAPN (the 2nd APN that I had deleted)
APN=web access
PROXY=that of the MMSAPN (the 2nd APN that I had deleted)
The information was given in the forum of my provider.
Today it works and I can send and receive MMS.
For this to work, it is obviously necessary that access to mobile data is activated: be careful sometimes after a restart it remains checked when it is not.
I thank all the developers for their efforts and perseverance.