Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.

Before installing a newly announced iOS release, check that your iPhone supports it, make and verify a fresh backup, and connect to power and Wi-Fi. Then review the update in Settings > General > Software Update and install when you are ready. Apple’s current guidance covers iOS 27; supported models and available versions depend on the release, so check Apple’s live information for your device.

Will your iPhone get the update?

Compatibility depends on the iPhone model and the specific iOS release. Apple says Software Update shows only updates compatible with your device. Open Settings > General > Software Update to see the installed version and whether an update is offered.

For iOS 27, Apple’s release-specific compatibility list includes iPhone 11 and later, including iPhone SE (2nd generation and later). Check that page again before updating: a compatibility list for one release is not a guarantee about future versions. Apple also advises installing an earlier update first if needed.

Back up your iPhone and confirm it finished

Make a fresh backup before installing. Apple supports backing up to iCloud or to a computer; choose a method you can complete before starting the update.

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.
#1 Best Overall
Sale
INIU 10000mAh 45W Fast Charging Portable Charger, Smaller Travel Power Bank
  • 40% Smaller & Lighter Portable Charger: Powered by the industry’s first TinyCell high-density battery technology, this ultra-compact 10,000mAh portable charger power bank is 40% smaller and 36% lighter than conventional chargers. Whether you are an office user slipping a mini small portable battery into a purse for commuting, or a student looking for lightweight college essentials, you get powerful daily carry convenience without the extra bulk to keep you powered on the go.
  • 45W Pro Speed Portable Phone Charger: This 45W fast charger boosts an iPhone 17 Pro Max to 76%, a Galaxy S25 Ultra to 84%, or an iPad Pro to 60% in just 30 minutes (charging from 20%). Whether you are a driver needing a quick portable charger for car, a commuter relying on a desk phone charger, or a gamer wanting a seamless Switch battery pack and Steam deck charger portable, you will spend less time tethered to a wall and more time enjoying your day.
  • Detachable Cable for Multiple Devices: Unlike a standard portable charger with built in cable that becomes useless if the cord breaks, INIU's 0.4ft detachable braided USB-C cable can be swapped anytime to save your investment. It effortlessly transforms into a versatile travel charger for multiple devices, ensuring your family or group travelers always have a reliable portable charger for all cell phones to keep everyone connected without carrying messy cords.
  • Airline-Safe Travel Essentials: This TSA-compliant, flight safe power bank provides nearly 2 full charges for your smartphone, making it the perfect battery pack flight safe for business trips, cruise vacations, and airplane travel essentials. Beyond flights, it empowers campers, hikers, and outdoor users with ultimate camping essentials and road trip essentials—so you can explore freely without battery anxiety, making it ideal gifts for travelers women and men.
  • Trusted Emergency Backup: As the SAFE Fast Charge Pro trusted by over 38 million users, we ensure the safest charging with the highest-grade materials. When unexpected storms or hurricanes strike, it acts as a lifeline—providing a dependable power outage battery backup and emergency phone charger for emergency users.

Make an iCloud backup

  1. Connect your iPhone to Wi-Fi.
  2. Open Settings > [your name] > iCloud > iCloud Backup.
  3. Tap Back Up Now and stay connected to Wi-Fi until the backup completes.
  4. Check the last-backup date and time shown below the control.

If iCloud reports that there is not enough storage, follow the on-screen options or make a backup to a computer instead. Apple does not specify a universal amount of free space required for an iCloud backup. For automatic iCloud backups, Back Up This [Device] must be on, and the iPhone should be connected to power and Wi-Fi with its screen locked. See Apple’s iCloud backup instructions.

Back up to a computer

Apple also documents computer backups. The available software depends on the computer: use Finder on macOS Catalina or later, or iTunes on earlier macOS or Windows. Apple’s update instructions describe the computer options.

Rank #2
Sale
for Magsafe Portable Charger, 5000mAh Slim Wireless Magnetic Power Bank
  • Precise Magnetic Alignment, Rock-Solid Hold: Designed for MagSafe-compatible iPhones, this magnetic portable charger delivers a strong 15N magnetic hold for precise alignment and stable wireless charging. Whether you're taking calls, snapping selfies, or using your phone on the go, this magnetic power bank stays firmly attached. Compatible with iPhone 18 Pro/18 Pro Max, for iPhone 17/17 Air/17 Pro/17 Pro Max, for iPhone 16/16 Plus/16 Pro/16 Pro Max, for iPhone 15/15 Plus/15 Pro/15 Pro Max, for iPhone 14/14 Plus/14 Pro/14 Pro Max, for iPhone 13/13 Mini/13 Pro/13 Pro Max, for iPhone 12/12 Mini/12 Pro/12 Pro Max, and MagSafe-compatible cases. Not compatible with non-magnetic cases.
  • Slim & Portable — Power Without the Bulk: Bulky power banks just don't fit your active lifestyle. That's why we designed the W5 for MagSafe portable charger to keep you moving. Weighing just 120g and only 11.8mm thick, W5 iPhone battery power bank doesn’t block your camera or get in the way. Snap photos, game, or take calls while charging — all without the hassle of awkward bulk. Plus, crafted with a tough yet lightweight shell, it’s impact-resistant, TSA-approved, and sleek enough for daily use.
  • 5000mAh Capacity, Ready When You Need It: The W5 iphone portable charger is designed to balance portability and reliable backup power. Its 5000mAh battery can provide up to one full charge for an iPhone 16, making it ideal for commuting, travel, and everyday emergencies. Stay connected for calls, navigation, photos, and more without worrying about running low on battery.
  • Flexible Charging – Wired or Wireless, Your Choice: Use it as a wireless charger for convenient cable-free power, or switch to USB-C wired charging whenever you prefer. This portable charger gives you the freedom to choose how you power up, while the USB-C output also works with AirPods, for iPad, for Apple Watch, and other compatible devices. Need to charge two devices? This magnetic power bank supports wired and wireless charging at the same time, making it a versatile for iPhone charger for travel, work, and everyday use.
  • Multi-Layer Protection, Lasting Battery Health: Built with an intelligent cooling chip, the W5 portable charger power bank safeguards your devices with comprehensive protection: overcharge, overheat, over-voltage, over-current, and short-circuit prevention. This advanced power management keeps your battery in top condition, even with prolonged charging. Charge day and night without worry — your device’s safety is our priority.

Prepare power and Wi-Fi

For a wireless update, connect the iPhone to a power source and a Wi-Fi network before you begin. A suitable charging cable is optional if you already have another appropriate way to power the phone. VPN or proxy connections can prevent the iPhone from contacting Apple’s update servers; if an update check fails, try again on a network without that obstacle.

Review the release details and install

Open Settings > General > Software Update. Review the offered version before proceeding. Tap More Details to see the version number and update details, then select Download and Install and follow the onscreen steps when you are ready.

Free tools Windows power users keep installed

One-click scans. No signup required.

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.
Rank #3
Magnetic Portable Charger 10000mAh, 20W Power Bank with Built in Cable
  • High Capacity in a Compact Body: With a 10,000mAh battery, this power bank delivers reliable power to keep multiple devices charged throughout the day. Compatible with iPhone 18/17/16/15/14/13/12 Pro/Max/Plus. Despite its high capacity, it’s designed to be lightweight and portable, easily fitting into your bag or pocket. Perfect for travel, work, or daily commutes, it ensures you stay connected and productive without the extra bulk. A great balance of power and portability for users on the go.
  • Fast and Efficient 20W Charging: Equipped with powerful 20W fast-charging technology, this portable charger significantly cuts down charging time. Quickly charge smartphones, tablets, and other devices without long waits. Compatible with various devices and brands, it offers stable and efficient power delivery every time. Ideal for busy users who need their devices ready to go at all times. Stay powered and save time with faster charging speed.
  • Charge Up to 5 Devices at Once: Designed for multi-device users, this power bank features five output ports, allowing you to charge up to five devices simultaneously. Whether it's your phone, earbuds, smartwatch, or tablet, power them all at once without compromising speed. Compatible with iPhone 18/17/16/15/14/13/12 Pro/Max/Plus and more. The single input port supports fast recharging, so you’re always ready to go with minimal downtime.
  • Clear LED Digital Display: Stay informed with the built-in LED digital screen that shows real-time battery percentage. No more guessing how much charge is left—get accurate info at a glance. The clear, easy-to-read display helps you manage power usage and know exactly when it’s time to recharge. Whether at home or on the move, you’ll always know your charging status, making power management simple and stress-free.
  • Advanced Multi-Level Protection: Your safety is our priority. This power bank features comprehensive protection, including safeguards against over-temperature, over-current, short circuit, and more. These advanced safety features protect both your devices and the power bank itself, ensuring safe and reliable charging. With smart protection built-in, you can charge confidently, knowing your devices are secure every step of the way.

You can also choose automatic updating. Apple says automatic installation is scheduled overnight when the iPhone is charging and connected to Wi-Fi, and you receive a notification before installation. With automatic download, the update downloads but you can install it later. The Apple update guide explains these options.

Apple’s iPhone User Guide says, “When you update to the latest version of iOS, your data and settings remain unchanged,” and still recommends backing up first. That is a general description, not a substitute for having a recoverable backup. Apple’s guidance does not provide a universal installation-time estimate or recommend that everyone install on the day of an Apple event.

Rank #4
Sale
Anker 621 MagGo Power Bank, 5,000mAh Magnetic Portable Charger
  • Smaller Than Ever: Anker's new MiniCell technology delivers identical charging performance with fewer components. This means it's smaller and lighter than ever before
  • Pocket-Sized Power: At just 4.13 × 2.62 × 0.45" and 4.41 oz, it snaps to your phone and fits effortlessly into your bag, purse, or pocket
  • Strong Attachment: Equipped with ultra-strong magnets that firmly attach to the back of the iPhone 15 or 14 so you can single-handedly take selfies, make calls, and more.
  • Charge in a Snap: Align your iPhone and battery with a snap. Say goodbye to disconnection issues caused by wireless charging misalignment. (Note:It's normal for the power bank to reach temperatures between 98-118°F when the ambient temperature is 77°F. Rest assured, this device meets international safety standards for safe operation.)
  • What You Get: Anker 621 Magnetic Battery (MagGo), 23.6 in (60 cm) USB-C to USB-C cable, welcome guide, worry-free 24-month warranty, and friendly customer service.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Support on Ko-Fi

If the update is missing or your iPhone needs space

The update does not appear

Check Software Update again after confirming your connection. If the update still does not appear, Apple says you can update using a computer: Finder on macOS Catalina or later, or iTunes on earlier macOS or Windows. Follow Apple’s computer update steps.

Your iPhone says more storage is needed

If prompted to temporarily remove apps, you can tap Continue; Apple says the removed apps are reinstalled automatically after installation. If you prefer not to do that, cancel and remove content manually before trying again. Apple’s reviewed instructions do not give one free-space figure that applies to every iOS update.

Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.
Best Value
Sale
OHOVIV Portable Charger Power Bank 50000mAh,4 Built-in Cables Battery Pack
  • Huge Capacity 50000mAh Power Bank:OHOVIV Portable charger ultra-high massive capacity provides 10 charges for iPhone 15, which make of new high-density polymer battery.Depending on battery size, most smartphones will get over 10 full charges. Portable power bank works and does not take on any extra room, suitable for camping, hiking, vacation, travel and other outdoors.
  • Charge 6 Devices at Once: OHOVIV 50000mah Portable phone charger with 4 Built-in Cables(for iPhone, Type-C, Micro, USB-A) and 3 Charging ports (2 USB-A , 1 Type-C), you can charge up to 6 devices at once without sacrificing power for Ultimate Convenience.These portable charger power bank cables made of high quality materials,withstanding over 10,000 bends.
  • 22.5W Super Fast Charging:The Cell phone portable charger boasts PD 22.5W output and QC4.0 quick charging technology, allowing it to charge your iPhone to 55% in just 30 minutes—3 times faster than a standard battery bank. USB-C two-way charging (IN&OUT) and LED digital display eliminate power anxiety, ensuring the best experience during your vacation
  • Compact Design with Widely Compatibility:Easily slip it into your backpack, pocket, or bag and carry it anywhere! This lightweight external battery pack size is 5.82*2.83*1.18 inches and weighs just 1.07 lb.Compatible with nearly all electronics, power bank for iPhone 16/15/14/13/12 series, iPad series, for Samsung s24/s23/s22/s21/s20, Google Pixel and other Android, tablets,etc
  • Safe and Secure Powerbank:Portable battery charger built in quality batteries and 10 multiple system protection to prevent overcharge, short circuit and and a series of potential dangers.Latest upgraded AI smart chip and NTC temperature control technology minimize real-time power loss, can reduce overheating risks by 97%, which are family picnic essentials.

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.