Factory reset timing depends on your device type and storage size

A factory reset on a phone, tablet, or computer typically takes between 5 and 30 minutes, though it can stretch longer depending on what you're resetting and how much data is on the device. A smartphone reset usually finishes in 10 to 15 minutes. A computer reset can take 30 minutes to over an hour. The process itself has distinct phases — erasing your files, reinstalling the operating system, and running initial setup — and each one takes a different amount of time.

The single biggest factor is storage size. A phone with 64 GB of storage resets faster than one with 512 GB. A nearly full drive takes longer to erase than an empty one. If your device is running slowly or has been in use for years, the reset may take longer because the system has to work through more fragmented data.

You also need to know what happens during the reset so you can plan around it. Your device will be completely unusable while the process runs. You cannot interrupt it or use the device for anything else. Plan for the full time window and have a backup device ready if you need to stay connected.

Key Takeaways

  • Smartphone factory resets usually take 10 to 15 minutes; computer resets take 30 minutes to over an hour.
  • Devices with larger storage or more data take longer to erase and reinstall, sometimes adding 15 to 20 minutes to the total time.
  • The reset happens in phases — erasing, reinstalling the operating system, and running setup — and you cannot use your device during any of these phases.
  • Plugging in power before you start prevents the reset from stopping halfway if your battery dies.

Why timing varies between phones and tablets

iPhones and iPads typically reset faster than Android devices because Apple's operating system is optimized for a smaller range of hardware. An iPhone reset usually completes in 8 to 12 minutes. iPad resets take slightly longer — 12 to 18 minutes — because of the larger storage capacity and screen size.

Android phones vary more widely depending on the manufacturer and how much customization is installed. A Samsung reset might take 15 to 20 minutes. A Google Pixel takes 10 to 15 minutes. Phones with heavy manufacturer software — extra apps and customizations added by the carrier or phone maker — sometimes take longer because the system has to reinstall all of that alongside the base operating system.

Tablets of any kind take longer than phones because they have more storage space and larger file systems. Even if you have not filled the storage, the system still has to erase and reinstall across that entire capacity. A 128 GB tablet reset will take noticeably longer than a 64 GB phone reset, even if both are the same brand.

Computer resets take significantly longer

Windows and Mac computers take 45 minutes to over an hour for a full factory reset, and sometimes longer. Windows 10 and Windows 11 resets typically take 45 minutes to 90 minutes depending on your hard drive type and storage size. Macs usually take 30 to 60 minutes. Older computers or those with mechanical hard drives (not solid-state drives) can take two hours or more.

The reason is simple: computers have much larger storage capacity than phones. A typical computer has 256 GB to 1 TB of space. The reset process has to erase all of that and then reinstall the entire operating system from scratch. Even if your computer is not full, the system still works through the entire drive.

Solid-state drives (SSDs) reset faster than mechanical hard drives. If your computer has an SSD, expect the lower end of the time range — 45 to 60 minutes. If it has a traditional hard drive, add 20 to 30 minutes to that estimate. You can check what type of drive you have by opening Settings on Windows or System Information on a Mac and looking for "Storage" or "Drive Type."

What happens during each phase of the reset

The reset process breaks into three main phases, and understanding them helps you know how much longer you have to wait. The first phase is erasing — the system wipes all your files, photos, documents, and apps. This is usually the fastest phase on phones, taking 2 to 5 minutes. On computers, erasing can take 15 to 30 minutes because there is more data to remove.

The second phase is reinstalling the operating system. The device downloads or accesses a fresh copy of iOS, Android, Windows, or macOS and installs it. On phones, this takes 5 to 8 minutes. On computers, this is the longest single phase and can take 30 to 45 minutes, especially if your internet connection is slow.

The third phase is initial setup. The device boots up, runs first-time configuration, and prepares itself for use. This includes creating a user account, setting the time zone, and checking for updates. On phones, this takes 2 to 5 minutes. On computers, this can take 10 to 20 minutes because there are more settings to configure and more updates to download.

How to speed up a factory reset

You cannot make the reset itself go faster, but you can prevent delays. The most important step is to plug your device into power before you start. If the battery dies during the reset, the process stops and may corrupt your device. A wired power connection is more reliable than wireless charging, especially for phones.

For computers, connect to a wired internet connection if possible. WiFi can be slow or unstable, and the operating system reinstall phase downloads files from the internet. A wired connection (Ethernet) is significantly faster than WiFi. If you only have WiFi, move your computer as close to the router as possible.

Close all programs and background apps before you start. On phones, this means closing all open apps. On computers, close your browser, email, and any other running software. Background processes can slow down the reset, though they will not stop it.

Do not restart your device during the reset, even if it appears to be frozen. The reset process sometimes shows a blank screen or a loading bar that does not move for several minutes. This is normal. Wait at least 30 minutes before assuming something went wrong.

What to do if your reset is taking too long

If your phone reset has been running for more than 45 minutes, or your computer reset for more than two hours, something may have gone wrong. First, check that the device is still plugged in and has not gone to sleep. On phones, the screen may have turned off — press a button to wake it and see if the reset is still running.

If the device is completely unresponsive and the screen is black, try a force restart. On iPhones, hold the volume up button and the power button together for 10 seconds. On Android, hold the power button for 30 seconds. On Windows, hold the power button for 10 seconds. On Mac, hold the power button for 10 seconds. A force restart will interrupt the reset, but if the device is truly frozen, the reset was not going to complete anyway.

After a force restart, you can try the factory reset again. If it fails a second time, the device may have a hardware problem or corrupted system files that a standard reset cannot fix. At that point, contact the device manufacturer's support line or visit a repair shop. Do not attempt multiple resets in a row — each one stresses the device further.

Frequently Asked Questions

Can I use my phone or computer while the factory reset is running?

No. Your device is completely locked during the reset and will not respond to any input. The screen may show a progress bar, a loading animation, or a blank screen. Do not try to interrupt the process or use the device for anything else. If you need to stay connected, use a different device.

Will a factory reset delete everything on my device?

Yes. A factory reset erases all your files, photos, apps, messages, and settings. It returns the device to the state it was in when it left the factory. If you need to keep anything, back it up before you start the reset — to cloud storage, an external hard drive, or another computer.

Why is my reset taking longer than the time you mentioned?

A nearly full device, a slow internet connection, or an older computer can all add time to the reset. Mechanical hard drives are significantly slower than solid-state drives. If your reset is taking twice as long as expected, check that the device is plugged in and connected to the internet, then wait. Do not interrupt it unless the device has been completely unresponsive for over an hour.

Do I need to do anything after the factory reset finishes?

Yes. After the reset completes, your device will boot up and ask you to set it up as if it were brand new. You will need to create or sign into an account, set your language and time zone, and connect to WiFi. This setup phase is part of the total reset time. After setup is complete, you can restore your files and apps from a backup if you have one.

What is the difference between a factory reset and a restart?

A restart (or reboot) simply turns your device off and back on. It takes 30 seconds to 2 minutes and does not erase anything. A factory reset erases everything and reinstalls the operating system. A restart is what you do when something is frozen or running slowly. A factory reset is what you do when you want to completely wipe the device or fix a serious software problem.