I just bought an unlocked Sprint sonim xp3 I am currently in Israel and using it on Tripletel service. I feel like it is losing service or having bad reception a lot. The dbm is usually in the high nineties or over a hundred which is pretty bad. I also noticed that it switches from LTE to 3G whenever a call connects. Curious if anyone else has had this issue, and also if anyone has any info on what bands Tripletel uses so I would be able to find a phone that works better.