iPhone Battery Pull-Tab Adhesive Strips: How They Work And What To Do When One Breaks

Most iPhone batteries from the iPhone 12 through the iPhone 15, plus the iPhone 16 Pro and 16 Pro Max, aren't glued down the way most people picture. They're held by stretchy white adhesive strips with little pull tabs on the end. Pull them the right way and the battery lifts out cleanly, with no prying and no bending. Pull them the wrong way and a strip snaps, and the job turns into one of the riskiest moments in a phone repair.

This guide is part of our DIY repair training series. It explains how these strips work, what Apple's own Self Service Repair manuals say to do, what to do when a strip breaks, and why a rushed battery job can go badly. It's based on Apple's public manuals, and we link each one so you can read the steps yourself.

What Stretch-Release Adhesive Actually Is

Picture a strip of double-sided tape that lets go when you stretch it. While it's flat, it holds the battery firmly to the inside of the phone. When you pull the end slowly at a low angle, the strip stretches out, gets thinner, and lets go of both surfaces. The battery is left sitting loose in its spot, ready to lift out.

The pull tab is the black or clear end of the strip that sticks out past the edge of the battery. Apple's manuals call it the "battery adhesive tab." Under it is the white adhesive strip that does the holding. You never pry the battery itself. You pull the strips out from under it.

That matters because a lithium-ion battery doesn't like being bent, dented or poked. A stretch-release design means a careful tech never has to put a tool under the battery while the adhesive is still holding.

🔧 Technical: What Apple's Manuals Say

Apple publishes a battery procedure for every supported iPhone. The steps below come from three of them: the iPhone 12 Battery, iPhone 15 Battery and iPhone 16 Pro Battery procedures. Details vary by model, so always read the one for your exact phone.

The Number Of Strips Changes By Model

Apple's iPhone 12 manual notes the battery has four adhesive tabs, two at the bottom and two at the top. The iPhone 15 manual removes two strips, and the iPhone 16 Pro manual removes three. The way in changes too: the iPhone 12 procedure starts with the display removed, while the iPhone 15 and 16 Pro procedures start by removing the back glass.

What You'll Notice: A guide for one model can send you looking for a tab that isn't there on another. If you're counting strips and the number doesn't match, stop and check the right manual.

Peel First, Then Twist

Apple says to grasp the tab with ESD-safe tweezers and gently peel it away from the battery. The iPhone 12 manual adds that you should peel the tab completely before twisting it around the tweezers, and not to pull until the white adhesive is wrapped around them. The iPhone 15 manual says to twist and pull up about 1 inch until you see white adhesive on the tweezers.

What You'll Notice: When it's going right, the strip winds onto the tweezers like thread on a spool, and you can see the white adhesive getting longer and thinner as it comes out.

Low And Parallel, Never Against Parts

Apple's wording is to keep the tweezers "close and parallel to the battery" and to keep twisting until the whole strip is out. Each manual also cautions, "Don't pull the adhesive strip against parts or screws."

What You'll Notice: A strip pulled up at a steep angle, or dragged across a screw or a sharp edge, is the one most likely to tear. Slow and steady beats fast every time.

⚠️ Heads Up: These Strips Tear Very Easily. They're thin, and one quick tug can snap them. Pull slowly and steadily at a low angle, and don't jerk or twist hard.

Tip: Warming the phone slightly before you pull softens the adhesive and makes the strips more pliable, so they're less likely to tear. Keep it only slightly warm to the touch, never hot.

When A Strip Breaks

Apple plans for this. If a tab or strip breaks and you can still see it, the manuals say to grab it with the tweezers, wrap it, and keep twisting. If it breaks and can't be retrieved, Apple says to insert the flat end of the black nylon probe only at an insertion point where a strip has been fully removed. The iPhone 12 manual is blunt: if all four strips break and can't be retrieved, "don't forcibly pry the battery. Stop the repair."

What You'll Notice: One broken strip is usually recoverable. All of them broken means the battery is still stuck, and forcing it is where the danger starts.

If A Strip Tears

A few drops of high-percentage isopropyl alcohol worked under the battery edge help soften the adhesive, and gentle heat helps too. Once the adhesive lets go, a plastic pry tool (or a plastic card) can slowly lift the battery out.

• Keep alcohol away from the battery connector and other connectors.
• Never use metal tools near the battery.
• Never puncture, fold, bend, tear or cut the battery. If it won't lift with light pressure, stop.
• Keep the heat gentle. Slightly warm, never hot.

If it still won't budge, let us take it from there. Book An Appointment

Clean, Press, Then Shake Test

On reassembly, Apple says to wipe leftover adhesive from the enclosure with ethanol or IPA wipes, while keeping alcohol off the areas it marks (it can damage the polyester film, and on the iPhone 12, the wireless charging unit). The new battery's underside adhesive goes on after the pink release liner comes off. Then the phone goes through a battery press, rolled back and forth three times on each side. Last, Apple says to gently shake the iPhone, and if the battery sounds loose, take it back out and use another replacement battery.

What You'll Notice: A properly seated battery doesn't rattle or shift. If you hear movement, the adhesive didn't bond.

Use A New Battery On Adhesive Models

Apple's Parts Support for iPhone page warns that for batteries installed with adhesive, it's recommended to only install new batteries, because used cells can be damaged during adhesive removal. Batteries installed with screws can be reused.

What You'll Notice: A battery that came out of another phone may look fine and still carry hidden damage from being pulled.

Which iPhones Use Pull-Tab Strips

Based on Apple's battery procedures for each model:

• Stretch-release strips: iPhone 12, 12 mini, 12 Pro, 12 Pro Max; iPhone 13, 13 mini, 13 Pro, 13 Pro Max; iPhone 14, 14 Plus, 14 Pro, 14 Pro Max; iPhone 15, 15 Plus, 15 Pro, 15 Pro Max; iPhone 16 Pro and 16 Pro Max.
• Electrically released adhesive: iPhone 16, 16 Plus, 16e, 17, 17e and iPhone Air. These use a different method, explained in How The iPhone 9V Battery Release Works.
• Screwed battery plate: iPhone 17 Pro, 17 Pro Max, 18 Pro and 18 Pro Max. No adhesive strips at all.

Older models and anything not listed here can differ. Check Apple's manual for your exact model before you start.

Before You Try This Yourself

Apple's battery manuals open with a warning that a battery should be replaced only by technicians with the knowledge and experience to repair electronics, and that mistakes can cause fire, injury or data loss. The tool lists include safety glasses, heat-resistant gloves, and a container of sand. That's not decoration. It's there in case a battery gets damaged.

If you go ahead, use the official manual, the right tools, and give yourself time. If you'd rather weigh it up first, our post When To Fix It Yourself And When To Bring It In walks through the honest pros and cons.

After the repair, Apple recommends running Repair Assistant to finish a battery replacement on these models. You run it yourself on the phone after reassembly (Apple Support 120579). If Stolen Device Protection is on, some security steps need Face ID or Touch ID or a one-hour wait when you're away from home or work, so finishing setup at home can be easier. (Apple Support 120340)

Common Mistakes Other Shops Make

"Cheap isn't always cheap, especially if the work is done poorly." — Steve Franchitti

Battery adhesive is where a rushed job shows. Here's what can go wrong, and how you'd notice.

• Yanking the strips. Pulling fast, at a steep angle, or across screws snaps strips. The shortcut that follows is often prying. Symptom: a dented or bent battery, which can swell later.
• Prying a battery that's still stuck. Apple's manuals say to stop rather than force it. Symptom: damage to the battery, flex cables or the film under it. A punctured lithium-ion battery is a fire risk.
• Skipping new adhesive or the press. The new battery goes in without bonding properly. Symptom: a battery that rattles or shifts when you shake the phone.
• Leaving old adhesive or debris behind. Apple says to clean the enclosure and check for loose screws or small parts. Symptom: a battery that doesn't sit flat, or pressure on the cell.
• Reusing a pulled battery. Apple recommends new batteries on adhesive models. Symptom: poor battery life or unexpected behavior while charging.
• Never finishing the repair. Symptom: Settings > General > About shows the battery as Unknown, or Finish Repair still waiting. (Apple Support 102658)

Our promise: we reseal every phone. We don't usually need your passcode, so when your model supports Apple's Repair Assistant, you can run it after the repair or we'll help you through it.

Honest Tradeoffs

• Stretch-release strips are safer than glue, but only when pulled patiently. They don't forgive rushing.
• DIY saves on labor, but you need the right tools, a clean bench and a plan for a broken strip. Apple's answer to "can't get it out" is to stop.
• A shop has done this many times, but you're trusting their care. Ask whether they use new adhesive and a new battery, and check Parts and Service History afterward.
• A new battery fixes battery problems only. If the phone has other issues, they'll still be there. Our iPhone battery replacement guide covers when a swap is worth it.

FAQ

What happens if a battery adhesive strip breaks?
If you can still see it, Apple says to grab it with tweezers and keep twisting. If it can't be retrieved, Apple's manuals describe using the black nylon probe only at a spot where a strip was fully removed, and stopping the repair if the battery still won't come out.

Can I reuse the old adhesive strips?
No. Once stretched, they're spent. Apple's reassembly steps use the adhesive on the replacement battery, set with a battery press.

Is heat needed to remove a pull-tab battery?
The Apple procedures we cite here (iPhone 12, 15 and 16 Pro) don't call for heating the battery. They rely on pulling the strips correctly. Warming the phone slightly can make the strips more pliable, but keep it only slightly warm, never hot.

My battery is swollen. Should I pull the strips?
No. Stop using the phone and read Swollen Phone Battery or Screen Lifting? What to Do Right Now.

How do I know if my battery needs replacing?
Start with How To Check iPhone Battery Health And Cycle Count.

Rather Have It Done For You?

We replace iPhone batteries at our shop in San Diego. Reserved times get priority; walk-ins check in with Steve first. Book An Appointment

Franchitti's Fix LLC is an independent repair shop, not affiliated with Apple. Steps summarized from Apple's public Self Service Repair manuals; always follow the manual for your exact model.