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Understand the fault, choose the right repair. Phone repair, care and how-to guides from the Cep Market repair team.

Latest articles

16 October 2026What is a phone’s SAR value and how to find itA SAR value shows how much energy the body absorbs from a phone’s radio waves and is measured in W/kg. Phones on sale must stay below the legal limit. On many Android phones the *#07# code, and on iPhone the legal section in Settings › General, shows the SAR value.
16 October 2026How to update carrier settings on iPhoneTo update carrier settings on iPhone, connect to Wi-Fi or mobile data and go to Settings › General › About; if an update is available, a prompt appears and you tap Update. If no prompt appears, you already have the current settings. If you inserted a new SIM, repeat the same step.
16 October 2026Why do phones explode? Risks and precautionsThe risk of a phone catching fire or exploding comes from the lithium-ion battery; puncture, crushing, swelling, overheating and poor chargers or batteries raise it. If the case is bulging, the phone is very hot, or you notice a smell or hissing, unplug it and place it on a surface away from anything flammable.
16 October 2026How to change the screen timeout on XiaomiOn Xiaomi you change how long the screen stays on in Settings › Lock screen › Sleep; on some versions it is under Always-on display & Lock screen. If the screen still goes dark early, turn off battery saver; if it goes dark on calls, check the proximity sensor.
16 October 2026Speaker cleaning sound: how to use it and does it work?A speaker cleaning sound is a low-frequency tone that vibrates the speaker cone to help push water droplets out of the grille. It is built into the settings on some Xiaomi models and into Water Lock on Apple Watch. It does not remove dust or dirt; if the sound does not recover, the speaker should be checked.
16 October 2026iPhone IC chip problems explained: signs and repairAn iPhone IC is a chip on the logic board that runs one task such as charging, audio, signal, Wi-Fi or the screen backlight. If the chip or its solder is damaged, that function stops: no charging, no audio recording or No Service. Software does not fix it; it is repaired on the board under a microscope.
16 October 2026Phone signal keeps dropping: causes and fixesA signal that keeps dropping can be caused by coverage where you are, the SIM card, the phone’s settings or a fault in the antenna or network hardware. The steps below help you tell whether the problem is the phone or the line.
16 October 2026Why mobile data runs out fast, and how to fix itThe most common reasons mobile data runs out fast are video apps, cloud photo backups, app updates and Personal Hotspot. Settings › Cellular on iPhone, or the data usage screen on Android, shows how much each app uses. Data saver modes and app permissions reduce usage.
16 October 2026What is Haptic Touch on iPhone, and how do you set it?Haptic Touch is the iPhone feature that opens a shortcut menu with a light vibration when you press and hold an item. It replaced 3D Touch, which sensed pressure on the screen, from iPhone XR and iPhone 11 onwards. You can set how quickly the menu opens under Accessibility › Touch.
16 October 2026How to use WhatsApp Web with an iPhoneTo use WhatsApp Web with an iPhone, open web.whatsapp.com or the WhatsApp desktop app on the computer. On the iPhone, go to WhatsApp › Settings › Linked Devices › Link a Device and scan the QR code on screen. When you are done on a shared computer, log out from the same menu.
16 October 2026Ways to save Instagram videos on iPhoneOn iPhone you can save your own Instagram posts and Reels from the app’s own menu. You can bookmark someone else’s video with “Save” in the app, and some public Reels have a download option in the share menu. Downloader sites and pages asking for your Instagram password put your account at risk.
16 October 2026“Your device isn’t compatible with this version” errorThe Google Play message “Your device isn’t compatible with this version” means your phone does not meet the Android version, hardware or region the app needs. First install the system update and clear the Play Store cache. If the phone no longer gets updates, the app may not run on it.
16 October 2026How to use Find My iPhoneFind My iPhone lets you see your lost iPhone on a map, play a sound on it, mark it as lost and erase it remotely if needed. Turn it on in Settings › your name › Find My › Find My iPhone. Use it from the Find My app on another Apple device or at icloud.com/find.
16 October 2026Android “System UI has stopped” error: how to fix itThe “System UI has stopped” or “isn’t responding” message is usually a software hang. Restart the phone, update the system and apps, and remove any launcher, theme or widget you installed recently. If it continues in safe mode, a reset after backing up is the last resort.
16 October 2026iPhone error 9 (NAND fault): how is it repaired?Error 9, shown while updating or restoring an iPhone with a computer, means the connection dropped during the process. First try another cable and port, update the computer and try again in recovery mode. If the error continues, the problem is usually hardware; a faulty storage chip (NAND) is a common cause.
16 October 2026Xiaomi screen mirroring to a TV or PCOn Xiaomi, Redmi and POCO phones, you mirror the screen with the cast tile in the control centre or under Settings › Connection & sharing. The TV must support wireless display (Miracast) or casting, and both devices should be on the same Wi-Fi network. On Windows, the wireless display feature must be on.
16 October 2026iPhone videos not playing: a step-by-step fixVideos not opening, stalling or staying black on an iPhone is usually caused by the connection, the app or full storage. Closing and reopening the app, restarting the iPhone and updating usually fix it. If there is no picture or sound in any app, the hardware should be checked.
16 October 2026How long does phone screen adhesive take to dry?Drying time depends on the adhesive. Pre-cut double-sided tape holds at once; liquid adhesive grips quickly but usually takes a day or longer to cure fully, and the time is printed on the product. While it cures, do not press the phone, heat it or let it get wet.
16 October 2026Opening an iPhone without a screwdriver: what are the risks?The screws at the bottom of an iPhone are special five-point (pentalobe) screws, and the screen is sealed with adhesive. Trying to open it with a knife or the wrong tool strips the screws, can crack the screen, tear the Face ID or Touch ID cable and damage the battery. So we do not recommend opening it yourself.
16 October 2026Downloading YouTube videos: legal and safe waysYouTube does not allow downloading videos other than through its own download button. The legal ways are watching offline in the app with YouTube Premium and downloading your own uploads from YouTube Studio. Third-party downloaders both break the terms and carry a malware risk.