Why Is Your Phone Restarting Automatically? Causes And Fixes
Short answer: A phone restarting automatically usually has a failing battery, a crashing app, overheating or a loose board connection behind it, so run nine free checks first. If it still reboots after a reset, battery repair typically costs 1,200 to 4,500 rupees in Bangalore.
A phone restarting automatically usually has a failing battery, a crashing app, overheating or a loose board connection behind it, so run nine free checks first. If it still reboots after a reset, battery repair typically costs 1,200 to 4,500 rupees in Bangalore.
Surprise reboots interrupt calls and eat unsaved work. If your handset also stutters, our freezing and lag guide covers that side. Here you will learn to read the pattern, rule out the free causes, and judge when a technician is worth booking.
At A Glance
Battery fix cost: 1,200 to 4,500 rupees, depending on the model
Board repair cost: 1,500 to 8,000 rupees, quoted after diagnosis
Battery swap time: 30 to 45 minutes once the part is ready
Warranty: 6 months on FixMob repairs
The nine checks below cost nothing and rule out software causes first.
What Makes A Phone Keep Rebooting Its Own?
A phone restarting automatically is rarely random. It is usually reacting to something: a battery that cannot deliver peak power, an app that crashes the system, heat, a bad update, or a connection on the board that has come loose. The pattern of the reboots tells you which.
Think of every reboot as either a safety response or a crash. The phone shut itself down on purpose to protect its parts, or the operating system failed and started over. Both look identical from outside, so the cause is easy to misjudge.
The usual suspects are:
A worn battery that loses voltage under load, so the phone cuts power
A buggy app, or an update that did not install cleanly
Heat from sun, gaming or a poor charger, which triggers protective shutdowns
A loose battery or screen connector after a fall
Liquid or corrosion on the board, sometimes weeks after a splash
Nearly full storage that leaves the system no room to work
If the phone restarts and then behaves normally, you have an intermittent fault. If it loops on the logo and never reaches the home screen, that is a boot loop, and it often needs a technician.
Is It A Software Problem Or A Hardware Fault?
A software fault is erratic and often tied to one app or one update. A hardware fault follows a pattern, appearing with heat, at low charge, during charging or after a drop. A phone restarting automatically in a repeatable way deserves a closer look.
If you searched “my phone is restarting automatically” and found only generic advice, start by logging when it happens. The table below turns that log into a likely cause.
What you notice | Likely cause | First move |
Restarts only while charging | Cable, adapter or charging port | Try a certified charger |
Restarts at low charge or in the cold | Worn battery | Check battery health |
Restarts after installing an app | App conflict | Boot in safe mode, remove the app |
Restarts when the phone is hot | Heat protection | Cool it down, remove the case |
Restarts after a drop | Loose connector | Technician inspection |
Restarts after water contact | Corrosion on the board | Switch off, get it inspected |
Loops on the logo | Failed update or board fault | Technician inspection |
Write down the time, the charge level and what you were doing for three reboots. Patterns appear quickly once you do.
Can A Worn Battery Make Your Phone Restart By Itself?
Yes. An aged battery cannot always supply the burst of power the processor asks for, so the phone cuts power to protect its components. A phone restarting automatically at low charge or in cold weather points at the battery before anything else.
Apple explains that a battery with a high chemical age has higher impedance, so its voltage can sag under load and theTo the Nine free checks for a phone that keeps rebooting, from safe mode to battery health, plus Bangalore repair costs. Fix it yourself or book a technician. power management system forces a shutdown to protect internal parts. it looks like a sudden shutdown or reboot. Android phones use the same lithium-ion chemistry.
Age matters because cycles add up. Apple designs iPhone 14 and earlier batteries to keep 80 percent of capacity after 500 complete charge cycles, and iPhone 15 batteries after 1000. A daily charger reaches 500 in about a year and a half.
Owners who say “my phone automatically restarts when the charge drops” are often describing this fault. On an iPhone, open Settings, Battery, then Battery Health. Many Android phones show similar data in settings or a diagnostics app. Our battery replacement guide explains what the percentages mean.
Why Does Heat Or Charging Trigger A Reboot?
Heat forces the processor and battery to protect themselves, and a poor charger adds heat and unstable power at the same time. Restarts that show up mid-charge, on a dashboard mount or after a long game point to temperature or the charging path, not software.
People who type “my phone restart automatically while charging” into search are usually dealing with this branch. Rule out the cheap suspects first:
An uncertified charger or a frayed cable that delivers uneven power
Lint packed into the charging port, which loosens the connection
A thick case that traps heat during fast charging
A phone left in direct sun or a parked car
Gaming or navigation running while the phone charges
Swap the charger and cable before anything else, because that costs the least and fixes a surprising share of charging-linked reboots. If the handset also feels hot while idle, our phone overheating guide shows how to tell normal warmth from a fault.
How Do You Stop Your Phone Restarting At Home?
Work through nine checks in order, starting with the free ones, and stop when the reboots stop. The step that worked tells you the cause. A phone restarting automatically after step nine needs hands-on diagnosis rather than another app or cleaner.
Log the pattern. Note the time, charge level and activity for the next three reboots.
Restart properly, then install every pending system and app update.
Free up storage. Delete unused apps and move media to the cloud until a good chunk is free.
Swap the charger and cable, and clear lint from the port with a dry, soft brush.
Cool the phone. Remove the case and test it in the shade for a day.
Try safe mode on Android. Hold the power button, then press and hold Power off until the Safe mode prompt appears. If reboots stop, uninstall recent apps one by one.
Check battery health using the steps in the battery section above.
Back up, then reset. Reset settings first, and use a full factory reset only as the last software step.
Book a hardware diagnosis if the reboots continue.
Confirm your backup actually finished before any reset. Reboots that continue on a freshly reset phone, with no apps restored, cannot be blamed on software.
Menus differ by brand, so search your model name with “safe mode” if the steps above do not match your screen.
When Does A Rebooting Phone Need A Technician?
Book a technician when reboots survive a reset, began after a drop or spill, or come with a swollen back panel. A phone restarting automatically after all that points to the battery, a connector or the motherboard, and only an inspection tells you which.
If the back panel bulges or the screen lifts at an edge, stop charging the phone and get the battery replaced quickly. Swelling is a safety issue, not just a performance one.
Fault | Typical sign | Bangalore cost | Notes |
Worn battery | Reboots at low charge or in the cold | 1,200 to 4,500 rupees | Swap takes about 30 to 45 minutes |
Loose connector | Reboots after a drop | 800 to 2,500 rupees | Often a quick reseat or replacement |
Board fault or corrosion | Boot loop, or reboots after water contact | 1,500 to 8,000 rupees | Can take one to four days |
These are ranges, not quotes, and the exact price depends on your model. Our phone motherboard repair guide explains what board-level work involves and when it beats buying a new handset.
FixMob is an independent repairer, so a phone still under brand warranty should go to the brand first. For everything else, a technician visits your door, quotes before starting, shares photos of the finished repair, and takes payment only afterwards.
Frequently Asked Questions
Is it normal for a phone to restart once in a while?
An occasional restart after an update is normal. Several unexplained restarts in a week are not, so note when they happen and start with the nine checks above.
Why does my phone restart automatically at night?
Overnight reboots often come from a scheduled maintenance restart, an auto-update, or a battery that sags while charging. Check your device care settings for an auto restart option before suspecting hardware.
Will a factory reset fix it?
Often yes when software is to blame. If a phone restarting automatically persists on a freshly reset phone with no apps, the fault is hardware, usually the battery, a connector or the board.
Can a software update cause repeated restarts?
Yes, a failed or partial update can leave the system unstable. Restart and install the latest patch, and if the phone loops on the logo, ask a technician to reflash it.
Is it safe to keep using a phone that restarts by itself?
Use it carefully and back up now. If the back panel is swollen, the phone smells of burning or gets very hot, stop charging it and get it inspected the same day.
How much does it cost to fix a phone that restarts by itself?
A worn battery fix typically costs 1,200 to 4,500 rupees in Bangalore, and board-level repair 1,500 to 8,000 rupees. You get a quote after inspection and pay only once the repair is done.
What Is The Fastest Way To Stop The Reboots?
Run the nine checks today and log what you see. If the pattern points to the battery, a drop or water, do not wait for the next lost call. Book a doorstep diagnosis with FixMob and get a quote before any work starts. A phone restarting automatically is cheaper to fix early.
- Price, battery fix
- 1,200 to 4,500 rupees
- Board repair cost
- 1,500 to 8,000 rupees
- Duration, battery swap
- 30 to 45 minutes
- Warranty
- 6 months
Sources
- iPhone battery and performance — Apple Support
- Phone Hanging Problem guide — FixMob
- Battery Replacement Guide — FixMob
- Phone Motherboard Repair guide — FixMob
Areas we cover around Bengaluru,Karnataka
- Bengaluru
- Koramangala
- HSR Layout
- Indiranagar
- Whitefield
- Electronic City
- Rajajinagar
- original capacity an iPhone 14 or earlier battery is designed to keep after 500 complete charge cycles
- 80 percent Apple Support
- typical Bangalore cost of fixing a worn phone battery
- 1,200 to 4,500 rupees FixMob phone hanging problem guide
- typical Bangalore cost range for phone motherboard repair
- 1,500 to 8,000 rupees FixMob motherboard repair guide