Develop Bugs

[Q] Bad Reception Madness

Hi all,
I have bought a couple Motorola Defy [T-Mobile - unlocked] from NegriElectronics and the phone is a great phone. The Big problem that I am having is that the signal strength that this phone is showing is always VERY low as compared to my T-mobile G2 that I also bought from negri and unlocked.
The first defy i left it at stock 2.1 @ 2.34.1
The other defy I flashed 3.4.2-155-2 Motorola SBF with RSD Lite.
The flashed defy show a 4dBm increase to the original but it still crappy
Everything in the phone works, and it is fast. But the Bloody reception drops to one bar and sometimes go into Emergency Call Mode.
I'm in Trinidad in the Caribbean and it is not the sim or the carrier because i placed the sim in my G2 and it gets full bars.
What can I do to improve the reception on my Defy's?????
THANKS

I had same problem. This fixed it.
http://forum.xda-developers.com/showthread.php?t=944258

I hope UNRAFA's solution works for you, but if it doesn't... just because your SIM works in the G2 doesn't necessarily mean it will work in the Defy. Not sure why. When I bought my Defy I had recently upgraded my SIM and it worked for a while -- then went off the rails reception-wise. T-Mo had me upgrade to a uicc SIM and that solved the problem. At least for me.

Actually the Chinese had made a baseband switcher apk which collected nearly 20 baseband settings of various defy roms worldwide. Unfortunately it has no English translation.

Hi All,
It has nothing to do with the sim (I am sure) and the Chinese application i cannot read
Is there any other tweaks that I can do to help the reception?

Seriously, the link i gave you contains all the information, the basebands, BaseBandSwitcher.apk to install and do it with a click, every option is in chinese but it got a number next to it matching the firmware version, and i think its prety much universal numbers and easy to guess, but yet a translation of every option of the program has been posted..
And yes, there are other options to get better 3g editing build.prop but despite good reports from people, that has not been proved to actually increase 3g speed and i wouldn't recommend doing that.

Compared to my Samsung Vibrant 2G reception was very poor out on rural interstates, but perfectly fine in the city and it has much better 3G reception than the Vibrant. I think there was a problem with my original.. I got a new one and I will be testing it out soon.

Ok, I see the baseband thing you were talking about, tried it, but i seem to get an increase of 4dBm on the signal
BTW, there is NO 3G here, just 2.5G/EDGE, hence I dont really care about the Internet speed. I just need a better reception.
I compared this phone to the 3 Nokias in the household and all the nokias were showing 5 bars, while the Defy was at 2
Something is really messed up with this. Is there any way to manually increase the tX and rx power of the radio ????
I'm on Pays 5.0 and still not much difference with the new radio/sbf

Baseband 3g fixes, not only fixes 3g speed, it fixes reception too. Just apply the fix for your country and you are done, theres also ZERO danger for your phone, you can apply patches one over another untill you get the one that best works for you.
An easy test is switch between "2g only , or 3g only" and watch reception bars for voice calls. If you have 3g slow speed or bad reception, you need a patch.

RE: On Chinese baseband switcher apk
Yo folks,
Check out
http://forum.xda-developers.com/showpost.php?p=12040851&postcount=71
I guess this translation is better then nothing right.
FYI I already tried it, seems there's some improvement but not that significant, but hey every region has different network quality right?
Ciao

Of course... you could have a bad phone.

VoLTE how do we turn on?

I see some people saying they already turned on their VoLTE, how does one go about doing this? I'm on the latest Kernel, running the latest PacMan ROM.
Sent from my SM-N900T using XDA Free mobile app

It's in call settings. Isn't pacman AOSP? it might be limited to TouchWiz roms.
Sent from my SM-N900T using Tapatalk

you need to return to stock in order to get the volte. when you try to restore via KIES it will ask you if you want to upgrade to the ne6 baseband. click on yes and be patient

So we can't use custom roms to get volte? We have to stick to stock rom?

visiovis said:
So we can't use custom roms to get volte? We have to stick to stock rom?
Click to expand...
Click to collapse
Correct

PhilPan said:
I see some people saying they already turned on their VoLTE, how does one go about doing this? I'm on the latest Kernel, running the latest PacMan ROM.
Sent from my SM-N900T using XDA Free mobile app
Click to expand...
Click to collapse
Volte will not and does not work at all if you are using Pacman rom
or any other AOSP, AOKP, CM or ported roms.
You will need to flash a Samsung N900T Kitkat 4.4.2 Touchwiz stock or
stock based custom rom if you want to get the Volte feature working.
Good luck.

yea i tried flashing all the different options/roms trying to figure it out. only the stock telco rom works for volte. thanks

XtreStoLite custom rom
visiovis said:
yea i tried flashing all the different options/roms trying to figure it out. only the stock telco rom works for volte. thanks
Click to expand...
Click to collapse
I have been searching for custom ROMs that can do VoLITE and i think I found one called XtreStoLite but I do not think it will work yet on your device. Someone told me something about wrong kernals, and until they make it install from a universal zip it is not workable yet.
But I would keep an eye out on that one and I think they are going to soon come up with more custom roms with volte.
:fingers-crossed:

***voLTE, WiFi calling, Tmobile***
=======================================
(linked from "David Ruddock, XDA" )
T-Mobile Unofficially Speaks To Us About Band 12 LTE / VoLTE And Unlocked Smartphones,
And Yep It's Still Confusing
-----------------------------------
Yesterday, we published an article asking an open question: what is up with T-Mobile band 12 support being removed from some unlocked smartphones?
Today, T-Mobile contacted us to speak about said article. Unfortunately, T-Mobile was unwilling to provide any official on-record responses to our questions. But after a short discussion, I can provide you some information I have learned on background (journalist speak for "cannot be directly quoted or attributed to anyone"). First:
On T-Mobile, any device on its network with band 12 LTE data support must also support T-Mobile Voice over LTE services and E911.
The E911 part isn't particularly important in terms of the certification requirement - all phones sold in America are technically E911 compliant, because by law they have to be. The problem is that E911 compliance is inextricably linked to T-Mobile's VoLTE requirement for band 12. Without VoLTE support, a device on band 12 service would be unable to make phone calls of any kind if no other T-Mobile band was available (it will not know to fall back to AT&T roaming - the call will just flat-out fail), and that would include making 911 calls, meaning the device would for legal purposes likely be out of E911 compliance, and T-Mobile could get in trouble with the FCC. Not to mention, you could have somebody trying and failing to dial 911 in an emergency, which would of course be terrible. And yes, by removing band 12 support, you can make E911 work, because the phone then has no signal at all and knows to try to roam onto another compatible network (AT&T usually) to complete the call. This is both a safety and liability issue, and it is easy to understand where T-Mobile would be coming from in terms of concern about this - they do have something of a history with E911 debacles. Clearly this is a very real safety concern, and I do sympathize with T-Mobile in the sense that they obviously can't just sit here and do nothing about it. But there are practical concerns for OEMs here - adding T-Mobile VoLTE isn't just as easy as flipping a switch.
In order to obtain VoLTE compliance for band 12, phones must go through T-Mobile's rigorous network certification process (and yes, unlocked phones can go through this certification).
Speaking off the record to one major smartphone vendor, we have learned that there are very real costs and complexities associated with obtaining that certification, and it must be done on a device-by-device basis. Many phone OEMs, then, may simply choose to remove band 12 support from their unlocked smartphones sold in America. This could mean phones like the Alcatel OneTouch Idol 3 (4.7 and 5.5), the Huawei Ascend P8 Lite, the Huawei SnapTo, OnePlus 2, Moto X Style (aka Moto X 2015 PE), Moto X Play, HTC One M9 Unlocked and Developer Edition, Saygus V2, and various imported phones (ie, some global unlocked Sony or Samsung devices) or unlocked branded AT&T phone models may lose band 12 support in future software updates. The fact is, we don't know what will happen, or to which phones, or when. Some manufacturers may choose to get T-Mobile VoLTE certification (Motorola has hinted as much with the new Moto X 2015 PE), but many may also simply choose to quietly disable band 12 for T-Mobile in software updates. Motorola, as we know, has already done this with the Moto E.
It is not clear what action, if any, T-Mobile will take if a smartphone vendor refuses to remove band 12 data support from their device and also refuses to undergo the T-Mobile VoLTE certification process. (Ie, they want to keep B12 data but not bother with B12 VoLTE certification.)
This is basically the kicker. What will T-Mobile do if a vendor says "no way" to dropping band 12 data, but also doesn't want to go through the VoLTE certification process? We don't know. They might not do anything. But they might do something. Again, this is why speaking to T-Mobile about this situation was so frustrating. Not only we were unable to directly quote or attribute any of the information we were provided, but there was also no clarity as to what would happen in the event the band 12 situation comes to a head with an OEM that refuses to "play ball."
It seems unlikely that any OEM would refuse T-Mobile's request here, though, as most of them are also partnered with the company on T-Mobile-branded devices.
We have asked T-Mobile again for an on-record statement about this entire situation, because it would help clarify it immensely. As things stand now, T-Mobile is attempting to put the ball in the court of manufacturers. Which, to be fair, manufacturers do have a role to play here - they have to make the decision to drop band 12 or go through the T-Mobile certs for these unlocked band 12 devices. Or, potentially, just ignore T-Mobile's band 12 requirements entirely and see what happens. Unfortunately, as you might guess, most smartphone OEMs have zero desire to discuss upcoming software updates in detail, or to ever put their product in a situation where it is being highlighted for losing a feature. That makes our job here a difficult one.
We will update you on any more information we receive about this situation, including any response from T-Mobile or potentially-affected device manufacturers we have reached out to.
---------------------------------------------------------

hey there, im using galaxy note 3 t-mobile running on AOKP rom android 7.1.2 with synergy kernel, the problem is when i switch my network to LTE from GSM, my device getting freezed and unresponsive after 3-4 minutes, this occured in Resurrection Remix and Linage OS, can anyone help me fixing this problem? and i dont want to go back to stock rom, thanks in advance

AT&T VoLTE on Pixel/XL 1

Hello -
I've done some searching online and here on XDA as well and have found some old threads on VoLTE with AT&T, but am hoping to get some more recent information. I'm currently on Verizon, but it's just not working for me in the areas I spend the most time (such as the office where I work). Got to test drive an AT&T sim card in those same locations and the difference is night and day (average download speed of 1mbps on Verizon vs 11mbps on AT&T).
According to the AT&T site, VoLTE is supported on the Pixel 2 when running a certain software version and above. But nothing about the regular Pixel (which probably means no official AT&T support).
Has anyone gotten VoLTE to work with AT&T on the Pixel 1?
And otherwise, is it really such a big deal to not have it? I don't really care about HD voice, but I do care about being able to call at any point, and being able to have a data connection while on a call (but again, is it really such a big deal? Not like I'm always on the phone, mainly want a solid data connection).
Thanks.

Can someone tell me actual specs on radio card for voice calls

I am trying to figure out the specs or model for the calling radio card on this phone. I live in a rural area and was trying out phones. I am on tmobile service and was testing with a Stylo 4 for a few weeks, calls were pretty good. I recently switched to test G7, seems the quality in the signal and voice is not as good. I am a little baffled. But it has only been 2 days and maybe its the weather or something.
In the mean time, I am trying to find out the type of radio card / chipset for voice calls on this phone. I prefer LG and trying to find a phone with best call quality. Carrier service is good and they are deploying a large amount of 71 band, im currently not getting it yet but holding out. This is just the reason behind phone selection and I know band has little to do with quality.
Thanks

The antenna and construction of the phone is more relevant then the chip. Besides 2g always gives you best signal

Question Redmi Note 9T 5G Issues

These devices are sometimes a complete mystery to me. I recently bought two Redmi Note 9T devices for my household to take advantage of 5G, which they do beautifully. But here at home 5G is spotty, at best, so 4G LTE is what gets used most.
However, my device frequently goes to LTE+ while my partner's never does, and since I'm the "master configurator" for the house I know that I have never done anything with settings that should have this end result.
I have the same issue as others have reported in that the signal strength falls so substantially when the switch to LTE+ occurs that the hotspot is useless. It always resolves when I reboot the device, and it will stick with LTE for many hours but, eventually, it will always revert to LTE+.
Is there any way to prevent this without using the previously noted app? My phones are not rooted and I really have no desire to root them, as there's no need otherwise.
Both devices are running MIUI Global 12.5.2 over Android 11 with the 2021-05-01 Android security update.
P.S. Sorry for necroposting, but this is one instance where the topic is already perfect, and things do change over time.