[Q] [MODEM] Verizon S5 on T-Mobile

[Taxmaster]

Hello All,

A family member recently purchased a VZW S5 and now I've helped to move them from VZW over to T-Mobile.

The phone is factory unlocked, and with the addition of the T-Mo SIM + the T-Mo APN, everything is up and running.

The key issue I am seeing is the signal strength vs. that of a true T-Mobile Handset. Example, in my house, I have 4 bars on my T-Mo Galaxy Note 3 but 1 bar on the VZW Galaxy S5. Additionally, it's constantly switching from LTE to H+ to 3G.

I've rooted the S5, custom ROM'd it, and even did the mod to unlock all of the different LTE bands but this hasn't helped.

The phone was running the latest FW from Verizon with the most recent Modem, but I'm wondering if there is another modem I could flash that is T-Mobile oriented that may help to improve the service.

Please let me know, thank you!

- Taxmaster

 

[crowbarman]

Hello All,

A family member recently purchased a VZW S5 and now I've helped to move them from VZW over to T-Mobile.

The phone is factory unlocked, and with the addition of the T-Mo SIM + the T-Mo APN, everything is up and running.

The key issue I am seeing is the signal strength vs. that of a true T-Mobile Handset. Example, in my house, I have 4 bars on my T-Mo Galaxy Note 3 but 1 bar on the VZW Galaxy S5. Additionally, it's constantly switching from LTE to H+ to 3G.

I've rooted the S5, custom ROM'd it, and even did the mod to unlock all of the different LTE bands but this hasn't helped.

The phone was running the latest FW from Verizon with the most recent Modem, but I'm wondering if there is another modem I could flash that is T-Mobile oriented that may help to improve the service.

Please let me know, thank you!

- Taxmaster

My understanding is that the phone simply doesn't have the hardware for all of the bands. It's not as simple as just flashing, to my knowledge. For example, I don't think the phone supports 2100 which is used by Tmobile in some areas.

 

[mem4720]

I just went through the same process. Enabled the bands, tried different modems, no improvement. Finally, bought a T-Mobile S5 and sold the Verizon. Performance is far better, plus it supports Wi-Fi calling.

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