No 4G and/or LTE signal after installing LiquidSmooth 4.2.2 RC1 (or any other ROM?)...

[Max Rebo]

Since I couldn't post to the xda-dev site (new user restrictions), I figured I'd ask here.

After rooting and installing LiquidSmooth 4.2.2 RC1 last night, I noticed that my phone would always default to either 3G or HSPA+.

Is this behavior typical for this (or any other ROM)?
(This is my first root/custom ROM attempt, by the way.)

I had to flash back to stock 4.1.1 because I didn't back up my contacts to an easily retrievable format (i.e., via Kies, which won't connect to a rooted phone).
Come to think of it, I backed up everything using Ti-Backup and ROM Manager. With the former, I couldn't locate the contacts file and in the latter, I would get an MD5 checksum error upon trying to restore. That's all moot now, as I'm back to fully-functional stock 4.1.1 and I retrieved my contacts via Kies.

Now I can re-root and install a different ROM. I had considered CM10 -- but does it have the same issue with 4G connectivity?

Thanks for any info.

 

[brkaras]

I had to do the same thing. Apparently the custom ROM's use a different LTE frequency than the stock and it causes signal degradation. I went back to stock and am just waiting it out. Highly recommend you do the same

Sent from my SAMSUNG-SGH-I747 using Android Central Forums

 

[Max Rebo]

That's the first mention I've seen regarding signal degradation with a custom ROM.

Other posts I've found mention that ATT always has the 4G or 4G/LTE icon displayed with the stock ROM. However, custom ROMs will display the type of service you are actually getting. I don't know which is correct.

 

[rong21]

I get 4G with ParanoidKANGdroid

 

[Max Rebo]

I get 4G with ParanoidKANGdroid

Good to know.

I just may not get a good 4G signal at my house. I plan to leave the ROM installed (now ParanoidKANGdroid) and see what kind of signal I get in various locations.

 

[vietalogy]

I had to do the same thing. Apparently the custom ROM's use a different LTE frequency than the stock and it causes signal degradation. I went back to stock and am just waiting it out. Highly recommend you do the same

Sent from my SAMSUNG-SGH-I747 using Android Central Forums

Starting see what your talking about. Not sure which is more accurate on displaying signal.

 

[brkaras]

I did a little reading on LTE bands. Look up LTE:13 vs LTE:14. The custom ROM's run on LTE:13 and stock runs on 14. I had little to no signal on custom ROM's where I normally had a solid signal. It works revert back to HSPA or 3G most of the time. See for yourself

Sent from my SAMSUNG-SGH-I747 using Android Central Forums

 

[vietalogy]

I did a little reading on LTE bands. Look up LTE:13 vs LTE:14. The custom ROM's run on LTE:13 and stock runs on 14. I had little to no signal on custom ROM's where I normally had a solid signal. It works revert back to HSPA or 3G most of the time. See for yourself

Sent from my SAMSUNG-SGH-I747 using Android Central Forums

Wonder if the dev could change that in the ROM. I went back to stock and went right back to jellybean.

Sent via Tapatalk

 

[Max Rebo]

I did a little reading on LTE bands. Look up LTE:13 vs LTE:14. The custom ROMs run on LTE:13 and stock runs on 14. I had little to no signal on custom ROMs where I normally had a solid signal. It works revert back to HSPA or 3G most of the time. See for yourself

Sent from my SAMSUNG-SGH-I747 using Android Central Forums

I'm not so sure now.

I'm at work and have been getting a (weak) 4G signal all day long (i.e., -110 dBm). Mobile network type is listed as LTE:13. (Still running ParanoidKANGdroid, by the way.)

I then found this topic:
LTE:14 vs LTE:13 - Galaxy Nexus - RootzWiki

After reading that, it seems that LTE:13 is really no different than LTE:14 when running JB.

Depending on location, my phone regularly switches between 3G/HSPA+/4G, whereas the stock ROM just displayed either a grey "4G" or colored "4G/LTE" symbol. I suspect that the grey 4G was not true 4G reception.

EDIT: While driving home, I observed that my 4G signal was pretty strong -- 3/4 or 4/4 bars, corresponding to approximately -80 to -70 dBm or thereabouts.
My conclusion is that the custom ROMs are a-okay. Many people might read this and think, "Duh," but since this is my first go at using a custom ROM, I really didn't know what to expect in terms of every day functionality. So far everything seems at least as good as stock.

I should also mention that even with the stock ROM, my network reception sucked while inside my workplace. Every now and then I would even completely lose cellular service (denoted by the craptastic "E" symbol).

Irrelevant note: I got my stock ring tones back, too. There's something I dig about the StarGazer ring tone. All is good.

 

[Brian West1]

I installed the same ROM and I'm having mobile data signal issues. Coming in and out. I checked phone status and it shows my Network Service Type is UMTS. I think that is 3G. I flash a lot and this is the first time I have had signal/data issues. I will be flashing back to AOKP Task 650 underwear kernal. Its the nest I've come across.

 

[Gary Hicks]

EDIT: While driving home, I observed that my 4G signal was pretty strong -- 3/4 or 4/4 bars, corresponding to approximately -80 to -70 dBm or thereabouts.
My conclusion is that the custom ROMs are a-okay. Many people might read this and think, "Duh," but since this is my first go at using a custom ROM, I really didn't know what to expect in terms of every day functionality. So far everything seems at least as good as stock.

The signal bars, and your dBm don't correspond with each other. The only thing the bars represent is your closeness to a tower. The dBm is all that matters for signal strength.

 

[myIphone4s]

Will cm10 cause this. might flash a rom to it.

 

[myIphone4s]

well i have no 4g/lte in my area now running carbon so I reverted back to stock (lost everything) got most back

Whos right the stock rom or custom?

 

[Mjones307]

Give hyperdrive rom a shot.Best custom rom I flashed.

Sent from my SCH-I605 using Tapatalk 2

 

[Seif Abdulhameed]

I am a noob. This is the first time I've ever posted in a forum (probably the first of very many). I really need help. At any rate, I installed LiquidSmooth 4.2.2 RC1. I have a Galaxy-S3, SCH-I535 (Rooted & Verizon Bootloader unlocked) Everything looks good except I have no phone icon and can't find one. I called my phone from Skype and it received the call fine. When it did a dialpad appeared. How can I produce the dialpad at will? Did I do something wrong? Can someone help me with this? ....Thanks

 

[rohit tillu]

my mobile phone is 3g how i should change to 4g mode
phone model (Micromax Canvas Mega E353 )
plz help me