Samsung s21 Ultra phone used to have root loader

Question 1

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crwdns2934197:0crwdne2934197:0 Samsung Galaxy S21 Ultra crwdns2933315:00crwdne2933315:0

Golam Mostofa

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Mud 6, 2026

edited by author Mud 6, 2026 crwdns2933505:0crwdne2933505:0 Golam Mostofa

Question 2

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

Samsung Galaxy S21 Ultra crwdns2933313:01crwdne2933313:0

DanJ 499.7crwdns2936485:0crwdne2936485:0

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Dzi 28, 2026

answered Dzi 28, 2026 crwdns2933505:0crwdne2933505:0 DanJ

Question 3

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Have I damaged micraphone by poking the inlet port?

crwdns2934197:0crwdne2934197:0 Samsung Galaxy S21 Ultra crwdns2933315:00crwdne2933315:0

Dave Johnston 13

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Dzi 15, 2026

asked Dzi 15, 2026 crwdns2933505:0crwdne2933505:0 Dave Johnston

Question 4

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I have spk3 mtlb mic problem

crwdns2934195:0crwdne2934195:0 Samsung Galaxy S21 Ultra crwdns2933313:01crwdne2933313:0

Ali Raza 11

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Dzi 7, 2026

answer accepted Dzi 7, 2026 crwdns2933505:0crwdne2933505:0 Ali Raza

Question 5

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

Samsung Galaxy S21 Ultra crwdns2933313:01crwdne2933313:0

Brittany Morgan

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Dzi 30, 2026

answered Dzi 30, 2026 crwdns2933505:0crwdne2933505:0 Brittany Morgan

Question 6

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

crwdns2934195:0crwdne2934195:0 Samsung Galaxy S21 Ultra crwdns2933315:02crwdne2933315:0

Jerry Wheeler 93.6crwdns2936485:0crwdne2936485:0

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Kul 25, 2026

commented Kul 25, 2026 crwdns2933505:0crwdne2933505:0 Jerry Wheeler

Question 7

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Can internal storage be upgraded within?

Samsung Galaxy S21 Ultra crwdns2933315:02crwdne2933315:0

datatechie

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Dzi 13, 2026

answered Dzi 13, 2026 crwdns2933505:0crwdne2933505:0 datatechie

Question 8

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Why Green line came on the screen?

Samsung Galaxy S21 Ultra crwdns2933313:01crwdne2933313:0

DanJ 499.7crwdns2936485:0crwdne2936485:0

crwdns2931217:0crwdne2931217:0

Nhl 26, 2025

answered Nhl 26, 2025 crwdns2933505:0crwdne2933505:0 DanJ

Question 9

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Screen working inconsistently after battery replacement

crwdns2934197:0crwdne2934197:0 Samsung Galaxy S21 Ultra crwdns2933315:00crwdne2933315:0

Richard M

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Ndz 24, 2025

asked Ndz 24, 2025 crwdns2933505:0crwdne2933505:0 Richard M

Question 10

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Always writing no sim card

crwdns2934197:0crwdne2934197:0 Samsung Galaxy S21 Ultra crwdns2933315:00crwdne2933315:0

pikudo 1.1crwdns2936485:0crwdne2936485:0

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Ndz 19, 2025

commented Ndz 19, 2025 crwdns2933505:0crwdne2933505:0 pikudo

Question 11

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phone keeps turning off and on, getting fairly hot.

crwdns2934195:0crwdne2934195:0 Samsung Galaxy S21 Ultra crwdns2933313:01crwdne2933313:0

Justin Bass 11

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Ndz 17, 2025

commented Ndz 17, 2025 crwdns2933505:0crwdne2933505:0 Justin Bass

Question 12

1 crwdns2930801:0crwdne2930801:0

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

crwdns2934195:0crwdne2934195:0 Samsung Galaxy S21 Ultra crwdns2933313:01crwdne2933313:0

Richard Schofield

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Ndz 3, 2025

commented Ndz 3, 2025 crwdns2933505:0crwdne2933505:0 Richard Schofield

Question 13

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Screen failure after battery replacement

Samsung Galaxy S21 Ultra crwdns2933315:02crwdne2933315:0

Rich

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Mud 27, 2025

answered Mud 27, 2025 crwdns2933505:0crwdne2933505:0 Rich

Question 14

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All cameras failed after rebuild

crwdns2934197:0crwdne2934197:0 Samsung Galaxy S21 Ultra crwdns2933315:00crwdne2933315:0

Thomas Hayes

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Dzi 26, 2025

edited by author Dzi 26, 2025 crwdns2933505:0crwdne2933505:0 Thomas Hayes

Question 15

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Screen turned on once and never again

crwdns2934197:0crwdne2934197:0 Samsung Galaxy S21 Ultra crwdns2933315:00crwdne2933315:0

Francisco Fonseca

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Dzi 19, 2025

asked Dzi 19, 2025 crwdns2933505:0crwdne2933505:0 Francisco Fonseca

Question 16

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Why is my phone isn't answering to wired earphones

crwdns2934197:0crwdne2934197:0 Samsung Galaxy S21 Ultra crwdns2933315:00crwdne2933315:0

Mohamed Bashiir 13

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Kul 13, 2025

asked Kul 13, 2025 crwdns2933505:0crwdne2933505:0 Mohamed Bashiir

Question 17

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How unlock PIN code on safe mode

crwdns2934197:0crwdne2934197:0 Samsung Galaxy S21 Ultra crwdns2933315:00crwdne2933315:0

Anas omer

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Yan 21, 2025

asked Yan 21, 2025 crwdns2933505:0crwdne2933505:0 Anas omer

Question 18

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Shattered Back, Reboot Loops, and SIM Issues. Can My Phone Be Saved?

crwdns2934197:0crwdne2934197:0 Samsung Galaxy S21 Ultra crwdns2933315:00crwdne2933315:0

jayeff 538.8crwdns2936485:0crwdne2936485:0

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Sun 23, 2025

commented Sun 23, 2025 crwdns2933505:0crwdne2933505:0 jayeff

Question 19

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Weird issue - water damage> cameras failed, then fixed, then bad again

crwdns2934197:0crwdne2934197:0 Samsung Galaxy S21 Ultra crwdns2933315:00crwdne2933315:0

Daniel Deak

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N'w 17, 2024

asked N'w 17, 2024 crwdns2933505:0crwdne2933505:0 Daniel Deak

Question 20

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screen won't turn on after screen replacement

crwdns2934197:0crwdne2934197:0 Samsung Galaxy S21 Ultra crwdns2933315:00crwdne2933315:0

Joseph Jackson

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Nhl 15, 2024

asked Nhl 15, 2024 crwdns2933505:0crwdne2933505:0 Joseph Jackson

crwdns2944620:0Samsung Galaxy S21 Ultracrwdne2944620:0

Samsung Galaxy S21 Ultra crwdns2944634:0crwdne2944634:0