i have a s4 i9505 which has been rooted and is running davdh's pure nexus rom.
i've got a bit of a problem with the gps - it locks when i first turn on maps but loses signal subsequently. signal stays lost for a few mintutes (maybe 2-5, it depends) and locks for a second or two before the signal is lost again.
i've had a look at several forums and it seems like its a common problem for the S4 Active, S3 and Note II. those problems were fixed when some users flashed a different modem - there seems to be a consensus that the problem is caused by overheating caused by the radio.
I was wondering if anyone here had a similar problem with their i9505, and if so, did you manage to fix it?
also, might anyone recommend a fix/modem version that might fix this?