
Clear app cache on Android
Clear an app's cache on Android to fix crashes and free up space. Step-by-step instructions for Samsung, Google Pixel, Xiaomi and other phones.
Practical technology help
Clear, step-by-step fixes for iPhone, Apple, Android and the apps you use every day. Find the setting, understand what it does, and get back to what you were doing.
Featured

Clear an app's cache on Android to fix crashes and free up space. Step-by-step instructions for Samsung, Google Pixel, Xiaomi and other phones.

Find your iPhone's Maximum Capacity in Settings, understand what the percentage tells you, and learn when a battery replacement is actually worth it.
Start with the symptom
Most people arrive with a symptom rather than a setting name. Pick the one that matches.

Android 17 bubbles let you float almost any app over what you are doing. Learn how to start a bubble, move and close it, and fix a missing Bubble option.

Android 17 update not showing on your Pixel or Samsung? See 8 reasons, from staged rollouts to beta enrollment, and how to check for the update the right way.

Apple Watch won't update or says Unable to Verify Update? Check charge, Wi-Fi, storage and the update file. 8 fixes straight from Apple's own steps.

Your purchase could not be completed in the App Store or Apple Subscriptions? Fix the payment method, unpaid orders, bank limits and region. 8 fixes.

iPhone back tap not working or not detected? Check the action, your model, the case and how you tap, then update and reset. 8 fixes for double and triple tap.

iPhone battery percentage not showing in the status bar? Turn on Battery Percentage, check your model, use Control Center or a widget. 7 ways to see the number.

iPhone camera keeps resetting settings every time you open it? Turn on Preserve Settings so your mode, filter and Live Photo choice stay put. 6 fixes.

iPhone flashlight turns on by itself in your pocket or when you wake the screen? Why it happens and 7 ways to stop it, from Tap to Wake to the Action button.

iPhone not vibrating for calls, texts or alerts? Check System Haptics, the Haptics setting, Vibration in Accessibility, Focus and Silent mode. 8 fixes.

iPhone stuck in headphone mode with no sound from the speaker? Check Bluetooth, the audio output, the charging port and Silent mode. 8 fixes that work.

Your iPhone has been used more than usual since upgrading iOS and it may affect battery life? Here is what the message means, how long it lasts and 8 tips.

Galaxy Watch not getting notifications from your phone? Check Phone notifications on watch, app switches, Do Not Disturb and battery limits. 9 fixes.

Learn how to record a call on Android with the Phone app on Pixel, Samsung and other phones, where recordings are saved, and the consent laws to know first.

Pair Apple Watch to new iPhone the right way: update, back up, set up the new phone and restore. Includes what to do if your old iPhone is gone.

Unpair Apple Watch without iPhone using the watch itself or iCloud.com. See what each method does to Activation Lock and your cellular plan before you sell it.

Learn how to hide your number when calling from an iPhone or Android phone, for one call or every call, and why it sometimes fails. Steps for US carriers.

How long does an iPhone transfer take? Apple gives no fixed time. See what changes it, Quick Start vs iCloud vs cable, and how to tell slow from stuck.

Why is my phone bill so high this month? Check these 9 common causes, from expired promos to device payments and fees, and learn how to fix each one.

What does No Caller ID mean? The caller hid their number or the network could not pass it. See how to find who it was, what to do, and how to stop the calls.

What kind of phone do I have? Find your exact model on iPhone or Android in under a minute with Settings, the back of the phone, the box or your account.
Browse
Every guide belongs to one category, so you can work through a device or a topic in order.
Settings, features and fixes for iPhone, from battery and storage to Face ID and iOS updates.
92 guidesApple ID, iCloud, Mac, iPad, Apple Watch and the services that tie them together.
58 guidesAndroid settings, Google account issues and device-specific fixes explained step by step.
57 guidesFixes and walkthroughs for the apps people use every day: messaging, streaming, storage and more.
41 guidesStraightforward walkthroughs for the things people actually need to do on their phones.
162 guidesSomething is broken. Work through the likely causes in order, starting with the quickest fix.
16 guidesLonger explainers for settings and features worth understanding properly, not just toggling.
24 guidesNewsletter
A short email with the guides people needed most that week. No promotions, and you can unsubscribe in one click.
Looking for something specific? Search every guide.