If you’re having battery life issues
An abnormally rapid drop in the battery of your iPhone for no apparent reason can be explained in two ways:
the permanent use of certain applications in the background,
a damaged battery.
To identify the nature of the problem, go to the Settings application , and choose the Battery section . First, be sure to check out Battery Health , which tells you the maximum battery percentage your iPhone can currently accumulate compared to when the battery was new. It is generally recommended to change the battery when this percentage drops below 80%. Apple also states that “the more your battery’s health deteriorates, the more its ability to provide optimal performance decreases” .
Secondly, if the state of your battery is above 80%, go to the Battery category and look at the applications that consume the most. If some are running in the background and are useless to you, go to General , then Refresh in background and disable them. You should be back to normal battery life.
If your iPhone won’t turn on or gets frozen
If your iPhone does not turn on or displays a black screen, try to force restart using the following techniques:
for iPhone 8 and above (including iPhone SE 2nd generation), briefly press the volume + button, then briefly press the volume – button and finally press and hold the side button until you see the Apple logo. If nothing happens, try charging your phone, and contact Apple Support if that fails.
for iPhone 7 and 7 Plus, simultaneously press the side button and the volume – button until you see the Apple logo. If nothing happens, try charging your phone, and contact Apple Support if that fails.
for iPhone 6s and below (including iPhone SE 1st generation), press the side button and the home button simultaneously until you see the Apple logo. If nothing happens, try charging your phone, and contact Apple Support if that fails.
Your iPhone may turn on but get stuck on startup. In this situation, you need to connect your iPhone to a computer (PC or Mac) and open iTunes , then select your iPhone. Depending on your iPhone model, follow the steps given above and wait until you see the recovery mode screen appear. In the specific window, select Update , then wait for the procedure to complete.
If an application no longer opens or constantly crashes
Some apps may sometimes have trouble opening or running on your iPhone. If you are having this problem, here are various solutions that might work:
force quit the app (swipe up the home screen while holding your finger on the screen, then swipe the desired app up) and relaunch the app
restart your device, then try to launch the application again
check for any app updates in the App Store, and update them if necessary
delete the application, then redownload it (be careful, this step could cause you to lose all the data contained by the application)
If none of these solutions solve your problem, contact Apple Support or contact the developer of the affected application directly from the App Store.
If your iPhone starts to become slow
There are many factors that affect the speed of your iPhone, and sometimes you can unblock this situation by performing simple operations. The points to watch out for are:
check your network status, as many apps require a good internet connection to work. If your network is congested or weak, you may end up with a slow iPhone due to the network.
If an app freezes or runs slowly, force close it (swipe up on the home screen while holding your finger on the screen, then swipe the desired app up) and relaunch it.
check that you have enough storage space (minimum 1 GB permanently free to optimize performance). Indeed, an iPhone overloaded with data will naturally tend to become slower. To save space you can delete photos/videos (by transferring them to Cloud or other devices), but also delete music or applications.
Disable power saving mode when not needed, as it temporarily disables some performance-enhancing features to conserve battery power.
Avoid subjecting your iPhone to too hot or too cold temperatures, as iOS adjusts the performance of the device to avoid overheating or cold.
check the condition of the battery (cf. 1st paragraph), as damaged batteries lead to a drop in maximum performance.
If the update fails
There can be several reasons why an update failed on your iPhone:
insufficient available storage space on the iPhone,
update download time too long,
impossible to connect to the update server,
interrupting the update process.
Major updates are often heavy and require a minimum of available space, which is quite substantial for the installation time. Although some apps may be temporarily removed to free up space, make sure you have enough room.
The slowness of the download depends on the size of the update and the speed of your connection. To increase it, avoid downloading other content and use a Wi-Fi network if possible.
If you are having trouble reaching the update server, or the process is unsuccessful, try updating your device again using a different network, and plug it into a power source.
In the event that these solutions do not work, you can remove and re-download the update:
go to Settings , then to General and finally to Storage [your device] ,
find the latest update you want to install in the list of applications,
click on it, then on Delete update ,
go back to Settings , then to General and finally to Software Update to download the latest update again.
If your home button is broken (for older iPhones)
Up to iPhone 8 and iPhone 8 Plus, all iPhones have a Home button (which includes Touch ID functionality for iPhones 5S and up). This main button is very useful because it allows you to return to the home screen, activate voice commands with Siri, or even access the menu to force stop applications.
Unfortunately, sometimes this button stops working for various reasons. The most obvious solution to this problem is to change your main button, but there is another solution that allows you to replace it (temporarily or not). Please note that you must have at least iOS 5 on your device to implement this solution.
To activate it, go to Settings , then General , Accessibility and choose Assistive Touch . This option will make a button appear directly on your screen, which you can move wherever you want, and which becomes more or less transparent when you don’t touch it. When you click on it, the button opens a complete menu that offers many features such as volume adjustment, screen lock, notification center or even the home button.
If your iPhone is overheating
iPhones are designed to be used in locations with an ambient temperature between 0° and 35°. Using your device below or above these thresholds may result in a permanent reduction in battery life and possibly a consequent decrease in performance. Certain normal uses (initial configuration, wireless charging, high quality video streaming, etc.) can cause your iPhone to heat up a little without any risk.
However, in the event of abnormal and excessive overheating, the iPhone will freeze and display the following message: “Temperature, the iPhone needs to cool down before it can be used” . The only functionality still accessible despite this warning message concerns emergency calls. To be able to reuse your appliance as quickly as possible, turn it off and place it in a cool place not exposed to the sun (and especially not in your fridge/freezer, you risk damaging it by causing a change in temperature that is too violent for the components).
If you can’t connect to a Wi-Fi network
Apple offers iPhone users to follow a few simple steps to fix the problem when connecting to a Wi-Fi network fails :
make sure that your router is on and that you are well located within its range (move closer if necessary),
make sure that Wi-Fi is activated on your iPhone and that the network is displayed correctly in Settings > Wifi ,
if the network asks you for a password, make sure you have entered it correctly,
check that the affected network does not display a message such as No connection to the Internet ,
check the cables and connections of your modem (restart it if necessary),
restart your iPhone if none of the previous steps worked,
if none of the previous steps solved your problem, reset the network settings by going to Settings, General, Reset and finally Reset network settings (note this option resets all networks, including those with passwords).
Factory Reset iPhone as a Last Resort
If some problems persist (except breakage or purely hardware problem) and you have no solution to fix them, there remains the complete formatting of the phone to bring it back to factory settings. Be careful, this method has serious consequences, if you decide to use it, remember to save all your data to be able to recover them after the operation.
To restore the device to default settings, and securely erase data, you can follow these steps:
go to Settings , then to General and finally to Transfer or Reset iPhone ,
choose Erase All Content and Settings ,
enter your passcode or Apple ID to confirm that you want to erase the data,
wait a few minutes for the deletion to complete.
Once the deletion is complete, you can turn your phone back on and set it up as if it was its first time. If you no longer have access to your code or if your device is disabled, follow this procedure recommended by Apple.
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