Hi folks,
So I followed the steps in this thread: http://forum.xda-developers.com/gala...s-to-t2886059/
to attempt to get LTE / AWS service on my G900P that's now on T-mobile. Bands I'm attempting to add are LTE 2/4 and WCDMA IV (AWS)
I've been able to write the NV values successfully (and verified they stuck after rebooting) with several tools - DFS, QXDM and EFS Pro. - so this doesn't seem to be an issue with getting the nv written. (I had KT-SGS5 kernel installed while trying this, as well as trying it on stock.) I'm writing the values via QXDM, EFS Pro and DFS don't seem to be able to write them.
However, as soon as I enable the WCDMA IV band (the only change to the GSM bands) and reboot, the phone is stuck in "No service" mode. Attempting to register on a network (via settings->Network providers gives "An error occurred while searching for networks". Toggling some of the band pref settings does nothing.
Disabling the band again restores service on reboot.
Should note that the only thing I'm doing different from that guide is I left the "band pref" alone for 3G bands. It was defaulted to all ones on my device so I felt it better not to reduce the number of options there.
Anyone else encountered this and able to offer insight? Or should I assume that because this band breaks service it means there's no RF cal data for it and there's no point trying further?
There is a report of someone with a G900P successfully enabling band 4 in the linked thread, so it *should* be possible, broadly speaking.
Should add I'm on rooted OG1. Maybe some additional protection in that update? Unfortunately I had to send in my phone for service and when it came back they'd updated it, so sadly no downgrading and I had to trip the knox bit to get root.
So I followed the steps in this thread: http://forum.xda-developers.com/gala...s-to-t2886059/
to attempt to get LTE / AWS service on my G900P that's now on T-mobile. Bands I'm attempting to add are LTE 2/4 and WCDMA IV (AWS)
I've been able to write the NV values successfully (and verified they stuck after rebooting) with several tools - DFS, QXDM and EFS Pro. - so this doesn't seem to be an issue with getting the nv written. (I had KT-SGS5 kernel installed while trying this, as well as trying it on stock.) I'm writing the values via QXDM, EFS Pro and DFS don't seem to be able to write them.
However, as soon as I enable the WCDMA IV band (the only change to the GSM bands) and reboot, the phone is stuck in "No service" mode. Attempting to register on a network (via settings->Network providers gives "An error occurred while searching for networks". Toggling some of the band pref settings does nothing.
Disabling the band again restores service on reboot.
Should note that the only thing I'm doing different from that guide is I left the "band pref" alone for 3G bands. It was defaulted to all ones on my device so I felt it better not to reduce the number of options there.
Anyone else encountered this and able to offer insight? Or should I assume that because this band breaks service it means there's no RF cal data for it and there's no point trying further?
There is a report of someone with a G900P successfully enabling band 4 in the linked thread, so it *should* be possible, broadly speaking.
Should add I'm on rooted OG1. Maybe some additional protection in that update? Unfortunately I had to send in my phone for service and when it came back they'd updated it, so sadly no downgrading and I had to trip the knox bit to get root.
I've tried this many times but it seems uncapable to get the LTE bands because their are hardware unsoported... Weird... Maybe someday, someone could give us the answer and bring us the light(LTE on our g900p)
ReplyDeleteI've tried this many times but it seems uncapable to get the LTE bands because their are hardware unsoported... Weird... Maybe someday, someone could give us the answer and bring us the light(LTE on our g900p)
ReplyDelete