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Samsung Galaxy S21 Ultra Repair Forum

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Samsung Galaxy S21 Ultra questions

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0 Answers

No Network single on S21 Ultra after screen repair

unanswered Samsung Galaxy S21 Ultra 0 Answers

Mark Wells

Asked

2 days agoMay 20, 2026

asked 2 days agoMay 20, 2026 by Mark Wells

0 Answers

Samsung s21 Ultra phone used to have root loader

unanswered Samsung Galaxy S21 Ultra 0 Answers

Golam Mostofa

Edited by author

May 6, 2026

edited by author May 6, 2026 by Golam Mostofa

1 Answer

Wi-Fi and Bluetooth Randomly Turning Off on Samsung Galaxy S21 Ultra

Samsung Galaxy S21 Ultra 1 Answer

Brittany Morgan

Answered

Apr 30, 2026

answered Apr 30, 2026 by Brittany Morgan

1 Answer

My mobile is not opening and there are many lines like 100

Samsung Galaxy S21 Ultra 1 Answer

DanJ 499.9k

Answered

Apr 28, 2026

answered Apr 28, 2026 by DanJ

0 Answers

Have I damaged micraphone by poking the inlet port?

unanswered Samsung Galaxy S21 Ultra 0 Answers

Dave Johnston 13

Asked

Apr 15, 2026

asked Apr 15, 2026 by Dave Johnston

2 Answers

Can internal storage be upgraded within?

Samsung Galaxy S21 Ultra 2 Answers

datatechie

Answered

Apr 13, 2026

answered Apr 13, 2026 by datatechie

1 Answer

I have spk3 mtlb mic problem

accepted Samsung Galaxy S21 Ultra 1 Answer

Ali Raza 11

Accepted an answer

Apr 7, 2026

answer accepted Apr 7, 2026 by Ali Raza

3 Answers

Dropped phone in salt water pool - melted this bit, what is it?

accepted Samsung Galaxy S21 Ultra 3 Answers

Dan P 23

Commented

Mar 28, 2026

commented Mar 28, 2026 by Dan P

2 Answers

Replaced the battery with an iFixit one and Battey life is worse

accepted Samsung Galaxy S21 Ultra 2 Answers

Jerry Wheeler 93.9k

Commented

Mar 25, 2026

commented Mar 25, 2026 by Jerry Wheeler

4 Answers

Loses Cell Signal After Screen replacement

accepted Samsung Galaxy S21 Ultra 4 Answers

Tarik

Commented

Jan 29, 2026

commented Jan 29, 2026 by Tarik

1 Answer

Why Green line came on the screen?

Samsung Galaxy S21 Ultra 1 Answer

DanJ 499.9k

Answered

Oct 26, 2025

answered Oct 26, 2025 by DanJ

0 Answers

Screen working inconsistently after battery replacement

unanswered Samsung Galaxy S21 Ultra 0 Answers

Richard M

Asked

Sep 24, 2025

asked Sep 24, 2025 by Richard M

0 Answers

Always writing no sim card

unanswered Samsung Galaxy S21 Ultra 0 Answers

pikudo 1.1k

Commented

Sep 19, 2025

commented Sep 19, 2025 by pikudo

1 Answer

phone keeps turning off and on, getting fairly hot.

accepted Samsung Galaxy S21 Ultra 1 Answer

Justin Bass 11

Commented

Sep 17, 2025

commented Sep 17, 2025 by Justin Bass

2 Answers

3U Tools but for Samsung

Samsung Galaxy S21 Ultra 2 Answers

Burhan

Answered

Sep 9, 2025

answered Sep 9, 2025 by Burhan

1 Answer

My phone gets hot while charging, is it normal or a battery problem?

accepted Samsung Galaxy S21 Ultra 1 Answer

Richard Schofield

Commented

Sep 3, 2025

commented Sep 3, 2025 by Richard Schofield

0 Answers

Main ribbon cables installed upsidedown

unanswered Samsung Galaxy S21 Ultra 0 Answers

Corey Gough

Commented

Aug 1, 2025

commented Aug 1, 2025 by Corey Gough

2 Answers

Screen failure after battery replacement

Samsung Galaxy S21 Ultra 2 Answers

Rich

Answered

May 27, 2025

answered May 27, 2025 by Rich

0 Answers

All cameras failed after rebuild

unanswered Samsung Galaxy S21 Ultra 0 Answers

Thomas Hayes

Edited by author

Apr 26, 2025

edited by author Apr 26, 2025 by Thomas Hayes

5 Answers

I have a camera failure on an S21 ultra after screen replacement?

accepted Samsung Galaxy S21 Ultra 5 Answers

Thomas Hayes

Commented

Apr 23, 2025

commented Apr 23, 2025 by Thomas Hayes