GPS fault after Samsung Galaxy S4 Display Assembly Replacement

In my case the problem was conductive rubber seal on magnesium mid frame that bears motherboard all around. On original screen this seal was very well conductive. On replacement screen (ordered from China Alliexpress) there is nonconductive seal from silicone rubber adhesive.

The solution is to cut original seal very gently. Than cut silicon rubber seal from replacement screen and place original seal in it.

See the difference (replacement part with extracted original seal laying on it):

https://goo.gl/photos/WVab9a73274yNryA9

There was the problem with interferences on screen while calling too. It is gone now .

Yep, opened it up, everything looks fine. Same deal as Anthony, no GPS and spotty Wifi

I replaced the antenna today and no dice, so based on your experience and mine, that's clearly not the issue. Really frustrating as I use my GPS a lot.

(fixed)

SCH-i545 Same issue, completed my 5th screen replacement on this phone (the previous 4 replacements completed in years past... I've broken this phone and replaced nearly half of the parts in it.)

I tried everything, I mean every single fix I could find including painstakingly removing the rubber seal on the midframe and replacing it with the one from the previously working screen just like David suggested. I tried to put folded up tinfoil in places to make sure everything was completely connected but in the end the solution was that the GPS spring had been slightly impacted (which I guess is easy to do if you press it with your finger or if the board is installed without everything being aligned properly). I used a thin needle and slid it parallel to the surface of the motherboard to get in-between the spring (not a traditional spring, it's more like a loop in the shape of a shoe/boot) which caused the spring to pop back up. Now it properly connects to the GPS antenna on the inside of the rear frame and all is grand.

• There are a total of 6 of these springs on the motherboard (4 small, 2 large for wireless charging) make sure all of them are not impacted/smashed down.

GPS Spring

GPS Spring

Cheers is this helps and sorry for the long read and the time wasted if it didn't!

There are many Galaxy S4 hardware models, just "Galaxy S4" is not clear enough.

I have the service manual for GT-i9500, if you have the correct model i can try to provide troubleshooting.

Did you ever get a resolution for this? I'm in exactly the same situation, everything but the !@#$ GPS is working. Any update appreciated.

Dave

I have a sch-i545 with the same issue. I replaced the display panel now have no gps fix and weak WIFI. I did a factory reset just to be sure but still no go. Any suggestions?

I ordered a new antenna (mine has 2, one white and the other red), so I'll see if that helps

I had another working i545 that swapped the two antennas (red and white wires) with and no change. My working phone still had normal GPS WIFI and the one with the replaced screen has no GPS and spotty wifi. I also tried prying up the little gold contacts scattered around the boards that make contact to the case with no change.

Right now I just hope my wife doesn't get lost and needs her GPS.

Same problem here (GT-i9505). No GPS and crappy WiFi connection. I reseted it twice, I tighten all the screws, I shouted, I cried and nothing. It's so disappointing, I wanted to wait for the S6 but maybe it's time to change it.

It would be awesome if somebody finds a solution for this problem soon...

Cheers,

I think you should check where the motherboard interfaces with the plastic mid frame. I think the GPS antennae is in the little plastic cutout just to the left where you see the micro sd label on the mid frame- this has to connect via a spring contact on the motherboard- these spring contacts may be your issue

I tightened the screw better (the black one inside the phone at the right) and now it's working fine.

i have this exact same issue, has anyone found a solution?

i've tried tightening all screws wit no success... unlike some others mentioned here my LTE and my WIFI signals are perfectly fine, just 0 GPS.

Downloaded a GPS test app that updated the aGPS data and all is working now.

I have s4 i9500. Wifi is working properly but gps is not fixing. The gps testing software show that there are 27 satellites but not fixing and didnot getting the position. I did factory rest on my phone but problem is still exist. Any one please give me some suggestions.

I got a used i9500, and after installing 5.0.1 Lollipop on it thought that the GPS problems (sees few satellites, and of the ones that it sees can't get a fix) were related to the experimental nature of the 5.0.1 ROM. After reading this thread about tightening the screws, thought - what the heck, can't hurt - tightened all the screws and bang! perfectly working GPS. Unbelievable! Just my 2c for posterity... Thanks, guys!!!

Tried everything and $@$*! Nothing works plus memory card is not accepted by my S4 GT 19505!

Now sold it and bought another one for £80 on Ebay!

My fix was very simple. I removed the back-lid and tighten all the visible screws. After this my GPS was up and running. I tried a lot of Apps but none could get more than a couple satellites on board. Any GPS fix or accuracy was non existent and google maps was lagging all the time and putting the map backwards or sideways, missing roads etc.. This happened some time after getting my display replaced for a new one and been driving with a Smartphone holder (which vibrates quite a bit). So i'm guessing the guys at the shop did some sloppy work at tightening the screws and the holder in my car took care of the rest.

Saludos, Uber driver.

I just fixed this problem on my Samsung Galaxy S4. Check for loose screws first and if it does not fix the problem, Follow these steps on this YouTube Video owned and uploaded by outie555:

https://www.youtube.com/watch?v=kMNb8BVr...

Enjoy!!