Samsung Grand Prime SM-G530M problems with 4G/LTE signal - XDA Assist

Hi, my phone, which is a Samsung Grand Prime SM-G530M, has almost 2 years old.
Over a period of one and a half years the phone detected the 4G / LTE signal without any problem.
In the last December the operating system was upgraded, security update, but did not change the version of android.
From that moment, always detects the signal E, and sometimes the signal H / H +. But the 4G signal never again .
The phone never fell on the floor, never fell into the water, the SIM chip works on 4G / LTE on other phones.
After a month with this problem, I root the phone to have more options for repair.
Please can anyone help me with this problem?
thank you very much to all.
Rick.

Related

Dual sim and signal lost

Hi there
I recently bought an Alcatel 991d and replaced it a couple of times due to signal loss and sim freezing (no internet, sms, and calls on either the sims). I passed to a Samsung Y duos which is more stable although it seems to still have some signal problem (when this signals is lost it does not come back although a good coverage area is reached, 3g icon disappear and no internet surfing is allowed, sims freezing (rare). With the Alcatel other people experiences serious problems expecially under poor coverage areas and hypothesized the problem could be related to the continuous jumping from 3g to 2g cells. Actually my Samsung y duos goes nice and smooth when I only use the 2g network. Do you think that countinous jumping form 3g to 2g can cause problem to android smartphone in general? Can you think to a solution for this?
thanks a lot!
my friend have similar problems on Gigabyte dual sim phone (I forget model name). didn't found solution yet

Bad network signal / reception?

I was wondering how everyones experience with network signal is on their S6.
I upgraded from an S4 i9505 to the S6 SM-G920F and I notice that the signal to my network is about -5dBm worse on average. It means the phone isn't as good at keeping signal in a low signal area, and it drops from 4G to 3G much more often that the S4 in the same place.
Maybe my antenna is bad or does anyone else experience this?
Also, don't use the signal bars as a judge of your signal. Samsung has changed them, for example they now show 2 bars 4G when my S4 shows 1 bar. Both phones could have -105dBm and the S6 will show 2 bars but S4 1 bar. It makes it look as if the S6 signal is the same or better when in fact the true signal is worse on the S6.
If you want to see your true dBm signal on the S6, go to the dialer and type *#0011# and choose STACK 1. Your signal is the RSRP.
Screenshots attached of S4 and S6, you can see S6 shows 2 bars with -109dBm and S4 shows 1 bar with -106dBm. S4 has a better signal, so don't believe the bars.
Well, i have a couple of flagship cell phone, including 2 motorolas ( Turbo and X 2nd gen) , i thing it might have differences from region to region , but from my experience , Samsung and LG was the ones with bad reception from past experience, S3 , S4 and S5 they were always with a bar or two lower than other phones, and when motorola has only one bar , sammy was with no signal at all ,long time already .
Well, motorola are the best in signal strength for me, follow by HTC. This time sammy has improved, i guess it's the in-house chips or something. Still no Motorola tough .
I guess we notice those things because we live or work in a region that has weak signal so a little bit more or less makes huge difference.
Here is my screen shot right now. The signal bar seems to be accurate with the signal db.
Thanks for the screenshot Galinha1. That's interesting that you find Samsung has improved this time around. I notice that your screenshot has "Ant RSRP Diff" at a minus number (-26) but I've never seen mine in a minus, you can see mine is at 14. I don't know what Ant RSRP Diff means though, any ideas?
If you find that the S6 signal is better than the S4, maybe I have a faulty device?
mupet0000 said:
I upgraded from an S4 i9505 to the S6 SM-G920F and I notice that the signal to my network is about -5dBm worse on average. It means the phone isn't as good at keeping signal in a low signal area, and it drops from 4G to 3G much more often that the S4 in the same place.
Click to expand...
Click to collapse
I have the exactly same experience. The S6 is more agressive drops to 3G. I'm coming from an HTC One M which in my everyday, according to OpenSignal, has 70-80% 4G connection 24/7, the rest 3G.
My S6 has around 30% 4G, 40% 3G and 30% Edge . Because of the great camera in the S6 I have decided to stick with it for now. Sadly. The great 4G signal in my area actually made me stay on 4G all day on the M8 and disregard wifi usage. On the S6 I've falled back to wifi which on my connection is a lot worse than 4G.
I'm really hoping for this issue to be in the Modem/radio firmware and not in the psycially device.
http://forum.xda-developers.com/galaxy-s6/help/lte-signal-indicator-issues-t3083001
mupet0000 said:
Thanks for the screenshot Galinha1. That's interesting that you find Samsung has improved this time around. I notice that your screenshot has "Ant RSRP Diff" at a minus number (-26) but I've never seen mine in a minus, you can see mine is at 14. I don't know what Ant RSRP Diff means though, any ideas?
If you find that the S6 signal is better than the S4, maybe I have a faulty device?
Click to expand...
Click to collapse
Well, i don't know for sure if it's better than S5, it's been around 7 to 8 months i last used my S5 . But i remember that it was a really bad device for signal and call quality. Looks like it's better or is the placebo effect from a shiny new toy . About yours been faulty , well, before last week i would say no for sure, i would assume a firmware or modem software issue, not hardware, but i bought my S6e 2 weeks ago, and i had a lot of drop calls, random reboots , freezes ,and people complaining that they call me and the phone rings once or twice and hung up , and in my end i never saw that attempt of calling, so i tried a new firmware, updated, downgraded it.. still having issues. So i went to my carrier and they didn't even let me finish my complains and handed me a new device. I went back home , thinking that couldn't be hardware issue and this new one would have the same problems. But now it works as it supposed to do . So i guess they might have a lot of faulty devices and software issues for those initial batches . Although i still have some drop calls, and 3g or 4g drops , is not that noticeable like it was before.
I have no idead what ANt RSRP Diff means.
I hope you solve your problem, anything i can help you let me know.
better than my old nexus 6 and m7. plus it holds onto lte much longer
I also have issues with cell reception. I'm on att, and although in areas where signal is strong there are no issues, I have serious issues maintaining a cellular connection when the signal is mediocre. I'm at my wits end with this. The phone seems to run fine, no issues besides the fact that I don't get signal in many areas that my old Nokia lumina 930 had no issue getting reception. Also, ive compared with a few friends iphone 6's and they have signal while my s6 will have nothing. I will be bringing the phone in tomorrow, but if anyone has any other suggestions to fix this besides factory reset, which I've already done, I'd appreciate the help.
I also had problems with cell reception. (no signal, drop calls)
As suggested on several forums I changed the network mode in settings to WCDMA/GSM and this seems to solve the reception problems. This way I am not be able to use 4G but at least I can make calls now XD
hnos said:
I also had problems with cell reception. (no signal, drop calls)
As suggested on several forums I changed the network mode in settings to WCDMA/GSM and this seems to solve the reception problems. This way I am not be able to use 4G but at least I can make calls now XD
Click to expand...
Click to collapse
Well looks like it's many more of us than I thought... I am on EE and reception is a joke ( joke anyway on EE) but with S6 reception is much weaker than on any previous phones I've had. What firmware r u running
misiokicio said:
Well looks like it's many more of us than I thought... I am on EE and reception is a joke ( joke anyway on EE) but with S6 reception is much weaker than on any previous phones I've had. What firmware r u running
Click to expand...
Click to collapse
I am on stock 5.1.1 G925FXXU2BOFJ
I believe the version is the same for the G920F
Just came back to Verizon after being with T-Mobile for a year. Signal is pretty much the same at the house as I has always been.
click for larger image
Around town it is normally pretty good. At work, it is much better than T-Mobile ever was.
S4 has better 4G signal then S6
This seems to be a problem world wide. Looks like Galaxy S6 is having issues with 4G. I compared it with my old S4 and it's way worse.
Here are the results.
S4- 4G inside the house signal: -109dBm 31asu
S4 - 4G outside the house signal: -102dBm 35asu
S6 - 4G inside the house signal: NO SIGNAL
S6 - 4G outside the house signal: -113dBm 0asu
On my S4 I'm getting a better signal inside the house than what I get on the S6 outside the house.
Does anyone know the reason for this and is there a fix?
4G is calculated differently than a 3G signal
4G: (113 is good, 140 is bad)

LTE Issues

Hi everyone, today I get my Galaxy S6.
Then I change my SIM card to my new device, the issue is that if I choose LTE/WCDMA/GSM, my S6 only have the less signal and 4G logo, If I choose WCDMA then I Have full signal with 3G, my SIM card was working well in my S4 with 4G before.
Thanks everyone, I Hope you can help me.
Hi
4G always gives much less signal than 3G unless you're very lucky. My LTE/4G gives 1 dot of signal generally, and was the same on previous phones.
Your S4 probably reported the signal bars differently, leading you to believe you had more signal than you had.
I wouldn't worry about it, it's not a fault.

Strange issue recall this after using notes 5 2 yrs ago lte and signal drop

Had a notes 5 when released recall then lte.. dropping to edge constantly where other galaxy devices maintain lte.. and 4-5 bars.
Just got a note 5 again after using newer s8 s9 phones i got it stock on 7.0 and again getting dropped lte down to edge back and forth slow loading speeds 2 bars mostly all time. Is this a acknowledge or fixed issue is it fixed with a rom is it a baseband issue ? Renders the phone usually useless half the time. I was excited to get back to notes 5 for rom purposes after dealing with no root newer phones since the s7 .
This is my very same note 5 I bought new sold to buddy he kept it put up and I got it back on 7.0
Batt...life is horrific lte drops to edge 24 7 and internet loading when it has lte is slow .
Any ideas
Mine being a W8 model became a paperweight within 2 days after purchase. Turned out it was one of the batches that was plagued with the sim card tray issue where it would detect the sim card then it wouldn't, acting as if it had been reinserted and having to restart constantly to get service again. The Note5 was a hit and miss in terms of quality. Great phone sure, when it worked.
Is the baseband and firmware up to date?

Frustrating S9 Plus

Maybe someone has an idea.
I recently purchased a S9 Plus from Walmart. Brand new. Its and American model SM-G965U.
Build: PPR1.180610.011.G965USQU6CSI2
Snapdragon Processor: (wish I had known earlier what a pain to root)
Android Patch Sept 1 2019.
Hardware Rev1.1
Kernel Ver: 4.9.112-16732439
#2 Fri Sep 6 13:23 KST 2019
Now here's the issue
I lose signal when I KNOW that it should not happen.
Example. Live north of Toronto, big major city, lots of cell towers but my phone shows only 1 sometimes 2 bars. GF has an apple same carrier it shows 4 bars. Switch SIMS with her and I still only get 2 bars.
Take my SIM and put it into an old S7 and BAM. 4 Bars.
My little S7 would have a strong signal that even at the cottage I could stream music. The S9 says no way.
Got a new SIM card thought maybe it's damaged. Nope No Change.
Switched carriers, installed another new SIM, still the same.
Have wiped and re-installed countless times all to the same effect no change.
Signal strength readings are always low generally between -103 - -117 32 asu
Not sure if it matters Network Connections are 2g/3g/LTE however at the top right of the home screen it shows signal strength and it switches to 4G . Do I need a 4 G phone plan???
I think its a hardware issue which brings me full circle. Is it possible to do a firmware upgrade? Or do i throw this thing in the garbage?
Appreciate everyone's help.
Peace out
M
Sometimes a firmware upgrade can help, have you tried it yet? Firmware updates also include security patches and they are important to have.
But, it could also be a loose connection with the antenna. If it is a hardware issue it is hard to do anything about it without replacing device. Can you try with another one?
Hey
Thanks for the reply. I took my old S7 threw the SIM card and its smoking.
In hindsight I think You are correct. Loose antenna would be exactly what I am experiencing. (kinda silly I didn't think of that)
I'm going to return the device and ask the reseller for a replacement .
Its just as well , I have way to may other projects on the go...like building an offset reverse flow smoker..bbq season will soon be here.
Lets close this thread and say good bye
Thanks again
M

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