Hi all.
I'm asking for your help in solving my S4 (I9505 jfltexx) problem: it's working only in 2G mode, no 3G, no 4G.
This suddenly started 15 days after the last flash, when I installed the Imperium ROM (ver 10.1) with the Philz Recovery 6.59.
So, I begun searching, googling, following procedures, flashing modems, roms, but I can't solve my problem.
My IMEI is OK, the SIM works in another phone, with a different operator SIM my S4 behaves the same, so is definitely a phone issue.
The *#0011# Service Mode shows the LTE and UMTS frequencies and cells IDs and that, I think, means that the hardware is working and that the phone has a software issue.
Tried Imperium 11.0, LolliROM 6.0, Resurrection 5.5.8, Cyanogen 12.1, brand and no brand Stock (all Lollipop ROMs), different modems.
I didn't downgrade because throughout my readings (a lot) about this issue, no one solved the problem this way.
Tryed this procedure
http://forum.xda-developers.com/gala...nt-3g-t2998527
with no success.
I forced the phone in WCDMA mode and, using the QPST and QXDM, I observed the event log.
This IMHO is the interesting part:
EVENT_WCDMA_L1_STATE----->L1M_FACH
EVENT_RRC_MESSAGE_SENT--->Logical Chan: UL CCCH Signal Msg Type: RRC_CONNECTION_REQUEST_MSG
EVENT_WCDMA_RRC_STATE---->Previous state: Disconnected, New state: Connecting
EVENT_WCDMA_PRACH-------->RF Tx Power: 24, Number of preambles: 10, AICH Status: No ACK
[this last event repeated several times until]
EVENT_WCDMA_L1_STATE----->L1M_IDLE
EVENT_WCDMA_RRC_STATE---->Previous state: Connecting, New state: Disconnected
A lot of people, considering just this forum, complains about this problem but I was not able to found a working solution.
I hope someone can help me because I don't have any further ideas or clues.
Anyway, thanks in advance.
I'm asking for your help in solving my S4 (I9505 jfltexx) problem: it's working only in 2G mode, no 3G, no 4G.
This suddenly started 15 days after the last flash, when I installed the Imperium ROM (ver 10.1) with the Philz Recovery 6.59.
So, I begun searching, googling, following procedures, flashing modems, roms, but I can't solve my problem.
My IMEI is OK, the SIM works in another phone, with a different operator SIM my S4 behaves the same, so is definitely a phone issue.
The *#0011# Service Mode shows the LTE and UMTS frequencies and cells IDs and that, I think, means that the hardware is working and that the phone has a software issue.
Tried Imperium 11.0, LolliROM 6.0, Resurrection 5.5.8, Cyanogen 12.1, brand and no brand Stock (all Lollipop ROMs), different modems.
I didn't downgrade because throughout my readings (a lot) about this issue, no one solved the problem this way.
Tryed this procedure
http://forum.xda-developers.com/gala...nt-3g-t2998527
with no success.
I forced the phone in WCDMA mode and, using the QPST and QXDM, I observed the event log.
This IMHO is the interesting part:
EVENT_WCDMA_L1_STATE----->L1M_FACH
EVENT_RRC_MESSAGE_SENT--->Logical Chan: UL CCCH Signal Msg Type: RRC_CONNECTION_REQUEST_MSG
EVENT_WCDMA_RRC_STATE---->Previous state: Disconnected, New state: Connecting
EVENT_WCDMA_PRACH-------->RF Tx Power: 24, Number of preambles: 10, AICH Status: No ACK
[this last event repeated several times until]
EVENT_WCDMA_L1_STATE----->L1M_IDLE
EVENT_WCDMA_RRC_STATE---->Previous state: Connecting, New state: Disconnected
A lot of people, considering just this forum, complains about this problem but I was not able to found a working solution.
I hope someone can help me because I don't have any further ideas or clues.
Anyway, thanks in advance.
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