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[Q] No signal after screen replacement: Damaged motherboard?

I was doing a screen replacement on a Nexus 5 and a small part from the motherboard fell off.
3 pictures to illustrate the problem here:
http://min.us/mKOC4FQe6F0HI
Afterwards, the mobile connection was a lot worse than before. Now, 2 weeks later, the phone's connection has become unusable and it constantly shows no service. Only very rarely does it have any sort of connection (Edge/3G/H/4G).
Questions:
1)What is the part that came off? (see album above) My knowledge is a bit limited but I'm quite sure it has to do with the connection? I notice there are 3 other parts exactly like this spread over the motherboard.
2)Can I repair it? Do I glue it back on? Do I solder it on? Does it somehow click on? (I have tried if it clicks but this part is so tiny it's almost impossible to really handle
3)Based on my explanation, do you think this tiny part is the only cause? The phone still had some connection at first but it got worse. I'm also planning to order replacement antenna cables to see if that helps.
Thanks in advance!

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In my case.. I had to replace the charging circuit Cuz it was 'broken' as described by the cellphone shop.. It has connections to the antenna.. Now phone is fully working.. Before that though, I tried different sim cards with different companies (bell Rogers and fido) all worked on my phone except my carrier sim card (mobilicity). After replacing the circuit I just mentioned everything works fine. Cost is 25$

Needs solder it's an rf trimmer /radio frequency. It's vital to an ariel of one type or other. If you want to risk a bodge assemble everything except the back and hold it in place with bluetack. If it works I was going to say epoxy it but don't. Get someone to solder it. It's easy to do if you have the skills.
Oh vital it's right way round and has now been turned. There should be a slot for tuning it.

Signal strength, LTE, 4G, getting signal, etc

Hi everyone,
Smartphone reviews are more and more complete as the competition between review websites increase but there is always a test kind of missing: signal reception.
Indeed it's hard to find data about it over the net. Some phone makers are happy to communicate about some technology they develop, and some just don't.
Nowadays it seems that all that matter is photo quality, design, autonomy and the screen. At long as you got a "bar" (which doesn't mean anything as we know) consumer seems to be happy... lol.
I found some comparisons that AndroidAuthority made, but that's about it (I can't post outside links yet...):
- Xperia Z5, LG G4, Galaxy Note 5, iPhone 6S, Moto X Style ( /best-lte-xperia-z5-x-style-note-5-iphone-6s-lg-g4-648755/ )
- Galaxy S6, LG G4, Huawei P8 ( /best-4g-galaxy-s6-v-huawei-p8-v-lg-g4-612827/ )
Over here they look at signal strength (near -60dBm being perfect, and near -110dBm being call failure), network switching rate, drapped calls, etc, which give you some clues.
Snippet (can't add images yet...):
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The point is to find with what phone you really have a change to get a nice signal (just to receive a call or to get stable data coming through), when some will just drop. Apparently Huawei got a little something better with their Signal + technology, when Apple seems to do good too, but the "king" Samsung seems to be quite crappy about it, even if review websites do not reflect it.
What do you think? Any trouble with your Samsung? Huawei owners do you really see a difference? (and not just about "bars" at home).
I guess it should be a good selling argument stating that your phone is having a better signal than the others (if you are traveling a lot, when hiking, during highway drive, using less battery if your antenna is less stressed, etc).

Alcatel Idol 3 6039H - GSM signal problem

Here is what happened:
I got a week old phone with a broken screen.
Decided to try to fix it so I ordered a spare screen from eBay. After 2 Weeks display finally arrived so I changed it my self by following a YouTube tutorial.
Everything worked flawlessly except new display had 4 dead spots on a touch screen so I complained and got a new one.
I changed it again and this time screen was OK but I can't get GSM signal, so I dissassembled it and assembled once again but still no change.
Tried different sim card-nothing happened.
Tried to register network manually but it doesn't work.
Plane mode ON and OFF is not helping neither.
Phone recognise a card, asks for PIN, PIN OK but still no signal.
Anyone has an idea is there a way to improve or boost GSM signal? Or to fix "receiver"?
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sour_tasty said:
Here is what happened:
I got a week old phone with a broken screen.
Decided to try to fix it so I ordered a spare screen from eBay. After 2 Weeks display finally arrived so I changed it my self by following a YouTube tutorial.
Everything worked flawlessly except new display had 4 dead spots on a touch screen so I complained and got a new one.
I changed it again and this time screen was OK but I can't get GSM signal, so I dissassembled it and assembled once again but still no change.
Tried different sim card-nothing happened.
Tried to register network manually but it doesn't work.
Plane mode ON and OFF is not helping neither.
Phone recognise a card, asks for PIN, PIN OK but still no signal.
Anyone has an idea is there a way to improve or boost GSM signal? Or to fix "receiver"?
Click to expand...
Click to collapse
Update about phone:
I wondered how my friend managed to crack a screen just buy stepping on it, and now I know.
I had to screw a shelf today, and while holding a screwdriver in one hand, and shelf in other, the only option to get some light was to put a phone with flashlight on between my teeth. Same second I've "bite" my phone, I heard "crack" sound, and the corner of my screen was broken. Now I know there is no gorilla glass here, and can easier understand the price difference of Alcatel and my Galaxy S6.

Device-Thread Verizon Wear24

Hi everyone,
I recently got my watch
So far I can tell you that I got the first (i think) OTA dump for Android Wear 2.0
https://drive.google.com/file/d/1fFN4woS7a6jEioeYaG76USHRzDQFk6HF/view
The Sim can be replaced, not easy as you can think but it can!
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If someone has a broken one, I could do replacement video for sure. I didn't find any USB connection that could be used in the recoverymode...

There is a group working on a USB connector with the Band pins over here:
https://forum.xda-developers.com/an...w-to-install-whats-app-android-t3714203/page5
xavierlangevin1 said:
Hi everyone,
I recently got my watch
So far I can tell you that I got the first (i think) OTA dump for Android Wear 2.0
https://drive.google.com/file/d/1fFN4woS7a6jEioeYaG76USHRzDQFk6HF/view
The Sim can be replaced, not easy as you can think but it can!
View attachment 4413708
If someone has a broken one, I could do replacement video for sure. I didn't find any USB connection that could be used in the recoverymode...
Click to expand...
Click to collapse

Here's an idea,
So we know which pins are required to interact via USB and can now install TWRP on it. The problem with this is that in order to use USB, we have to take apart the watch and fancy a connector out of wires and such. From what I read, contained in the band is a LTE antenna connected over 4 pins (and I believe a Wifi antenna in the other), since we dont need LTE (at least where I'm at in Canada), perhaps routing the 4 pins (and de-soldering them from the motherboard somehow) to the USB pins on the motherboard could make a much cleaner way to connect usb. this would require quite a bit of fine soldering, but if you're up for the task im sure the old LTE band can be hacked apart to fancy a USB plug out of making USB access alot easier. Could help with development forsure. I havent received my watch yet but I think this would make a decent mod.

got this verizon wear24 watch die on me - touchscreen sensor isnt registering any touches. any suggestions to revive it?

Rom or just poor radio on 8T?

So my 8T is converted to global, and I have the EU 11.0.6.9 update installed.
I'm not sure if its just the updates or just the phone in general but I noticed it struggles, or rather sucks in certain areas that do not have the greatest reception in comparison to iPhones. I was recently on a job, where just about everyone with an iphone was able to lock in with a decent signal, meanwhile my 8T couldn't even get a single bar. Same carriers too.(TMO)
Anyone else notice this?

I think it's just the phone. There's an area on the highway near my house that has a low signal (in between two cell towers) and the 8T will drop out with no signal, where every other phone will be able to maintain at least 1 bar.

Oddly enough I've been signal in places where I didn't get signal with my last phone? Same sim card, both phones were running Lineage.
Of course there are so many factors, it's going to be hard to get "real" results.

Coderedpl said:
So my 8T is converted to global, and I have the EU 11.0.6.9 update installed.
I'm not sure if its just the updates or just the phone in general but I noticed it struggles, or rather sucks in certain areas that do not have the greatest reception in comparison to iPhones. I was recently on a job, where just about everyone with an iphone was able to lock in with a decent signal, meanwhile my 8T couldn't even get a single bar. Same carriers too.(TMO)
Anyone else notice this?
Click to expand...
Click to collapse
If you happen to have the R14 or newer SIM card and 5G turned on, your phone could be preferring upgraded Sprint band 41 over other frequency bands. I've found that in some areas this doesn't work so well because the band is really touchy without having overlapping coverage. For that reason I change my data setting to 4G/3G/GSM. I don't believe the iPhones have that band or access to that band yet. It depends on the iPhone I guess.

I have a Sprint purchased, on TMO sim card per their instructions after the merger. I'm seriously considering MSM back to the T-Mobile software. For the simple reason of what you just described. I was blazingly fast 5G before the conversion. Now I struggle with even connection on Wi-Fi calling or no connection for phone calls at all out of my house it's horrible.
And what the hell is the the H in my data on notification bar.
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The room may have put an older baseband on the phone which can causes issues like this.