topic Re: Set 3G under Preferred network type to fix mobile data in Get Support

Set 3G under Preferred network type to fix mobile data

ericpman — Wed, 05 Jan 2022 20:47:00 GMT

I have LineageOS 17.1 (Android 10) installed on a Galaxy S6 (SM-G920W8) and was having trouble with mobile data. I switched the preferred network type to 3G and it works now. LTE wasn't working for me as it's not available with Public Mobile. I know that others have recommended this fix but I didn't find it until now. I hope someone finds this useful.

Re: Set 3G under Preferred network type to fix mobile data

Luddite — Fri, 04 Sep 2020 17:14:20 GMT

@ericpman LTE is available on PM, however the phone must have matching frequencies. Also, sometimes the 3G signal is better.

Network Frequencies at PM

4G LTE/LTE Advanced: 700 MHz, 850 MHz, 1900 MHz; 2100 MHz downlink with 1700 MHz uplink (AWS). PM throttles speed on these to 3 mbps.
HSPA (3G): 850 MHz, 1900 MHz (UMTS). N.B. Must have these for calls to work. Texting and data also work on the 3G frequencies.

Re: Set 3G under Preferred network type to fix mobile data

Staliger — Fri, 04 Sep 2020 17:19:33 GMT

@ericpman I would leave it on 3G if it only works for you. + you may have a higher speed on it rather than on LTE throttled to 3Mbps

Re: Set 3G under Preferred network type to fix mobile data

ericpman — Fri, 04 Sep 2020 17:27:10 GMT

Thank you for the clarification but I wonder why I am having trouble when LTE is set. The phone supports those frequencies.

Re: Set 3G under Preferred network type to fix mobile data

gpixel — Fri, 04 Sep 2020 17:36:44 GMT

@ericpman try resetting your network settings

lineage os could be causing software issues... or it could be a failed service on that rom. modded ROMs rarely support all features on a device

Re: Set 3G under Preferred network type to fix mobile data

computergeek541 — Fri, 04 Sep 2020 19:02:44 GMT

@ericpman I believe this is a software issue. If by chance LTE (recommended) was mistakenly programmed as LTE only, your phone calls wouldn't have worked.

Let's assume that your phone isn't at all LTE-compatible with Public Mobile. LTE as the preferred network settings means that your phone should have automatically changed network types.

Re: Set 3G under Preferred network type to fix mobile data

geopublic — Fri, 04 Sep 2020 19:33:38 GMT

@ericpman wrote:
Thank you for the clarification but I wonder why I am having trouble when LTE is set. The phone supports those frequencies.

@ericpman More than likely you need to install the correct modem firmware for your device. If you restore the device to the factory firmware it should work without any issues.

Re: Set 3G under Preferred network type to fix mobile data

jor123 — Fri, 04 Sep 2020 19:36:47 GMT

@Staliger wrote:
@ericpman I would leave it on 3G if it only works for you. + you may have a higher speed on it rather than on LTE throttled to 3Mbps

In my case at least latency is much higher on the 3G network