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Address: Hasanpaşa Mh. Söğütlüçeşme Cd. No: 192, Kadıköy, İstanbul, 34722, TR
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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 2026Why do I hear my own voice on phone calls?Hearing your own voice faintly during a call is normal; phones feed a little of your voice back to the earpiece so talking feels natural. If your voice comes back delayed and echoing, the cause is usually the connection, the other person, or a headset or speakerphone.
16 October 2026WhatsApp video call problems on iPhone: how to fix themIf WhatsApp video calls on your iPhone will not connect, drop, or send no picture or sound, the cause is usually a permission, the network or a saving setting. If settings do not help and the camera or microphone also fails in other apps, the hardware should be checked.
16 October 2026How to turn off and restart a phone with a non-removable batteryWhen a phone with a non-removable battery freezes or the screen stops responding, a button combination can force it to restart. If the phone had liquid contact or overheated, the goal is to turn it off and not charge it.
16 October 2026How to tell if an iPhone is a replacement deviceThe easiest way to tell whether an iPhone is new, refurbished or a replacement is the part number in Settings. Whether parts have been replaced is shown in Parts and Service History.
16 October 2026Phone has signal but cannot make calls: what to doIf the signal bars look full but calls do not connect, the cause is usually a setting or the status of your line. Call forwarding, call barring and line restrictions are the most common causes; rarely, a hardware fault gives the same symptom.
16 October 2026Phone chip (IC) repair: cost and processA chip (IC) is a small component on the phone’s board that handles a specific job: charging, audio, network or touch. In a chip fault, the soldered chip on the board is repaired or replaced, not a separate part. The price depends on the model and the faulty chip.
16 October 2026How to fix iPhone notifications not workingIf your iPhone is not getting notifications, the cause is usually a Focus mode left on, an app permission switched off or a setting that holds notifications back. Try the steps below in order; hardware faults are rare with this problem.
16 October 2026Is there a setting to turn the iPhone proximity sensor on or off?iPhone has no setting to turn the proximity sensor on or off; it works automatically during calls. The setting related to waking the screen is “Raise to Wake”. If the sensor causes problems, the cause is usually a protector, a case or dirt.
16 October 2026Choosing a phone processor: which one suits you?Comparing phone processors with a single ranking is misleading; rankings change with every new model. The right processor depends on how you use your phone. Here we explain the processor families and what to look at when choosing.
16 October 2026What is a GSM number and where can you find it?A GSM number is your mobile line’s phone number; it is what Turkish forms ask for as “GSM no”. You can find your own number in your phone’s settings, in your carrier’s app or by calling someone.
16 October 2026How to test an iPhone screenYou do not need a special code to test an iPhone screen. Use solid colour images to look for dead pixels and spots, drag an icon across the screen to test touch, and check settings to see whether the screen has been replaced. This test matters most when buying a second-hand iPhone.
16 October 2026iPhone sound problems after an update: how to fix themLosing or reduced sound on an iPhone after an update usually comes from a changed setting, a Bluetooth connection or an incomplete update. Check the settings in order; if the problem started at the same time as the update, a hardware fault is unlikely.
16 October 2026How to tell if an iPhone has been opened or repairedThe clearest way to tell whether an iPhone has been opened is Parts and Service History in Settings. Battery and screen messages, the True Tone option, the screws and the screen edge also give clues. Check them together when buying second-hand.
16 October 2026iPhone storage upgrade: how it is done and what happens to your dataAn iPhone’s storage can be increased by replacing the storage chip (NAND) on the board with a higher-capacity one. It is a board-level repair; you must back up before the work and your data is restored from the backup afterwards. We tell you which models it suits at diagnosis.