i tried understanding by myself what exactly the modem does in a cellphone but since the term/word modem is so common it was hard to get results for the exact thing i want to understand.
my reception issue is this:
im from israel in a network called "Golan-T", using my previous phone, a nexus 4, i had great internet access and cell reception, 90% of the time i had 4/4 bars and the internet was H+ with speeds of 5-10Mbps (normal speeds here in israel)
now on my nexus 5, im there is a constant issue with the above
the bars go from 2-3 RAPIDSLY, meaning they could switch between 1-3 bars every 2-5 seconds, which i suspect not only means a terribly low signal, but also destroys my battery life
2nd, for some reason i NEVER get H+, but i assume the icon for + just might no be there in the nexus 5, but i get the same every few seconds change cycle with 3g (which gives me speeds of under 1MBps and i cant do ANYTHING not even google now searches) and H, which also changes every few seconds.
yesterday i drove for over an hour with Waze and didnt have internet for even 1 second.
so - after the above long story
i was wondering what could be a solution and someone tossed my way that the modem could be the issue and that it can be flashed, so i was hoping i could get some guidance here