How to Pack a Phone Safely to Post for Repair (Step-by-Step + Checklist)
Most devices that arrive at a workshop damaged in transit weren't packed carelessly – they were packed the way people pack everything else: phone in a padded envelope, envelope in a postbox, fingers crossed. But a phone is a slab of glass and aluminium with a battery inside. Send it through a sorting machine in nothing but a jiffy bag and a hairline crack can become a shattered screen.
Packing a device properly takes about ten minutes and a few materials you probably already have. This guide covers exactly how to do it for phones, tablets and laptops, what to include, what to leave at home, and how to choose postage that protects you if something goes wrong. For the bigger picture, see our guide on how mail-in phone repair works.
Direct answer: To post a phone for repair safely, back it up and power it down, tape over any cracked glass to contain loose fragments, wrap the phone in two to three layers of bubble wrap, and pack it snugly in a small but sturdy box – not just a padded envelope – so it cannot move. Include a note with your name, order reference and the fault; leave out your SIM, memory card, case and accessories; and send it tracked and insured to the device's value, keeping your proof of postage.
Before You Pack: Back Up and Power Down
Packing is the last step, not the first. Before anything goes near a box:
- Back up your data. If the device still powers on, back it up to iCloud, Google or a computer. Repairs are overwhelmingly successful, but a backup means a damaged device is never a lost device. Our back up your device before repair guide covers iPhone, Android, iPad and Mac.
- Note your passcode and sign-out steps. Follow the prepare-for-repair steps in that guide – including turning off Find My or activation locks where appropriate – so the workshop can test the repair.
- Power the device off. A switched-off device can't turn on in transit, run hot in a sealed parcel, or deep-discharge.
What You'll Need
Nothing specialist – a quick raid of the kitchen drawer usually covers it:
- A small, sturdy cardboard box – the single most important item. A double-walled or small postal box beats a padded envelope every time. Aim for roughly 3–5cm of cushioning on every side of the device, but not so big the contents rattle around.
- Bubble wrap or foam – enough for two to three full wraps. Foam sheeting, clean packing paper or even a folded tea towel work as backup cushioning.
- Strong parcel tape – for sealing and reinforcing the seams.
- A small piece of tape for the screen – clear sticky tape or low-tack painter's tape is ideal.
- A sealable plastic bag (sandwich or freezer bag) – protects against moisture and keeps the device and your note together.
- A pen and a slip of paper – for the note that goes inside.
Avoid a jiffy bag with no rigid protection, an oversized box, and newspaper pressed against a screen (it compresses to nothing under pressure).
How to Wrap a Cracked Screen
A cracked screen needs one extra step before wrapping, because loose glass moves, scratches and can work itself further loose in transit.
- Tape over the cracks. Lay strips of clear tape across the cracked area so the fragments are held in place. This stops shards shifting inside the parcel and keeps the panel together as one piece. Use low-tack tape and a light touch if you have it.
- Protect the screen face. Once taped, place the device screen-side inwards within the wrap, so the most fragile surface is cushioned in the middle of the parcel rather than against the box wall.
- Don't pick at loose glass. Tape it down rather than trying to remove pieces – that risks cuts and makes the repair messier.
If the back glass is also cracked, give both faces the same treatment. The aim is simple: nothing sharp should be able to move.
Step-by-Step: Packing the Phone
With the device backed up, powered off and any cracks taped, here's the packing sequence:
- 1. Bag the device. Slip the phone into a sealable plastic bag to guard against moisture and keep everything together.
- 2. Wrap it. Wrap in two to three layers of bubble wrap, covering all six sides – front, back, all four edges and the corners. Corners take the worst of any impact, so build them up, then tape the bundle closed.
- 3. Cushion the box. Put a 3–5cm layer of cushioning in the bottom.
- 4. Centre the device. Place the wrapped phone in the middle, then pack cushioning around every side until it can't shift. Give the closed box a gentle shake – if you feel movement, add more padding.
- 5. Add your note. Drop in the note with your details (see below) before sealing.
- 6. Seal it well. Tape firmly along all seams using the H-taping method (centre seam plus both ends). A box that pops open in the network is a lost parcel.
What to Include in the Parcel
Inside the box, alongside the device, add a short note. It travels with the parcel and lets the workshop match it to your booking instantly:
- Your full name
- Your order or booking reference (from your confirmation)
- Your contact email and phone number
- A plain description of the fault – what's wrong, when it started and anything that triggers it ("screen cracked but still responds", "won't charge unless the cable is wiggled", "no sound on calls"). The more specific, the better.
- The device passcode – only if you've been asked to provide it for testing; follow the guidance in your booking.
What NOT to Include
Just as important as what goes in the box is what stays at home – it protects your data, your valuables and your spare bits:
- Your SIM card – eject the tray and keep the SIM. It holds account access and isn't needed for the repair.
- Memory cards – remove any microSD card so your photos and files travel with you, not the parcel.
- The case and screen protector – unless the case itself is the fault, take it off. Cases get separated from devices and add bulk.
- Accessories – no chargers, cables, AirPods, earphones, adapters, watch bands or styluses unless specifically requested. They're easy to lose and rarely relevant.
- The original retail box, if it's valuable to you – it adds resale value. Send the device in a plain postal box and keep the pretty one safe at home.
Choosing Postage: Tracked and Insured
How you send it matters as much as how you pack it. A device is small, light and valuable – exactly the kind of parcel worth protecting properly.
- Use a tracked and insured service. Choose postage that is tracked end to end and insured up to at least the device's value – for most phones a service such as Royal Mail Special Delivery, or a courier's tracked and insured option. Tracking lets you and the workshop see where the parcel is; insurance protects you if it's lost or damaged.
- Declare the correct value. Cover only pays out up to the level you declare, so match it to what the device is worth.
- Keep your proof of postage. Hold on to the receipt and tracking number until the device is safely back – it's your evidence and your reference for any claim.
- Photograph the packed parcel. A quick photo of the sealed, labelled box (and the device beforehand) is a useful record of its condition.
- Check your booking for sending details. Always confirm the address and any instructions in your booking, or contact us before you post, rather than assuming a label or address.
celltech is a UK-wide, mail-in repair specialist, and repaired devices are returned tracked and insured. For the exact postage arrangements for your repair – including how to send your device in – follow your booking confirmation or get in touch before posting.
Address Label Tips
- Write clearly, or print the label. A smudged postcode is how parcels go astray.
- Add a return address. Put your own address on the parcel so it can come home if it can't be delivered.
- Protect the label from rain. Cover it with clear tape so it stays legible if the box gets wet.
- Remove old labels and barcodes. If you're reusing a box, peel off or scribble out previous addresses and courier barcodes so it isn't mis-scanned.
- Duplicate the address inside. Pop a slip with the destination and your return address in the box too, in case the outer label is damaged.
Tablets and Laptops: Bigger Means More Protection
The same principles apply to tablets and laptops, but larger devices have larger, more flexible screens and more weight behind them, so they need more cushioning – not less.
Tablets
Treat a tablet like an oversized phone: tape any cracked glass, bag it, then wrap in three or more layers of bubble wrap with extra build-up on the corners. The large, unsupported screen can bow under pressure, so cushion both faces firmly. Use a box sized to the tablet with a generous margin all round.
Laptops
A laptop deserves the most care. Close the lid, never tape anything to the screen, and don't put pressure on the lid. Wrap the whole machine in several layers of bubble wrap, then – ideally – double-box it: the wrapped laptop in one box, cushioned inside a slightly larger one with 5cm of padding all round. Remove the charger and accessories unless asked. For a full walk-through, see our guide to MacBook and laptop repair by post in the UK.
Printable Packing Checklist
Run through this before the box leaves your hands:
| Step | Done? |
|---|---|
| Backed up the device | ☐ |
| Turned off Find My / activation lock as required; noted passcode if asked | ☐ |
| Powered the device off | ☐ |
| Removed SIM and memory card | ☐ |
| Removed case, screen protector and accessories | ☐ |
| Taped over any cracked glass to contain fragments | ☐ |
| Sealed device in a plastic bag | ☐ |
| Wrapped in 2–3 layers of bubble wrap, corners built up | ☐ |
| Used a small, sturdy box with 3–5cm cushioning all round | ☐ |
| Device can't move when the box is shaken | ☐ |
| Included a note: name, order reference, contact, fault | ☐ |
| Sealed the box firmly on all seams | ☐ |
| Clear address label, return address, taped against rain | ☐ |
| Sent tracked & insured to the device's value | ☐ |
| Kept proof of postage and tracking number | ☐ |
| Photographed the packed parcel | ☐ |
Frequently Asked Questions
Can I just post my phone in a padded envelope?
It's not recommended. A padded (jiffy) envelope has no rigid structure, so a phone inside is exposed to bending, crushing and impact in the postal network. A small, sturdy box with cushioning all round costs almost nothing and dramatically lowers the risk. If a box is genuinely impossible, at minimum sandwich the wrapped device between two pieces of stiff cardboard – but a box is far safer.
Should I tape over a cracked screen before posting?
Yes. A strip or two of tape across the cracks holds loose glass in place so fragments don't shift, scratch or work loose in transit. Use clear or low-tack tape, then wrap the device with the screen cushioned in the middle of the parcel. Don't try to pick out loose shards – tape them down instead.
Do I send my SIM card and charger too?
No. Remove and keep your SIM and any memory card – they aren't needed for the repair and hold your access and data. Leave out chargers, cables, AirPods and other accessories unless specifically asked to include them, as loose items are easily separated from the parcel.
How should I send it – which postage is best?
Use a tracked and insured service with cover up to at least your device's value, such as Royal Mail Special Delivery or a courier's tracked and insured option. Keep your proof of postage and tracking number until the device is safely returned, and check your booking confirmation or contact us first for the exact sending details for your repair.
What if my device is water damaged – does packing change?
Don't try to dry it with heat or rice, and don't switch it on. Power it off, seal it in a plastic bag and pack it as normal. The sooner a liquid-damaged device reaches the bench the better the outcome, so post it promptly and note "liquid damage" clearly on your fault description.
How is my repaired device sent back to me?
celltech is a UK-wide mail-in specialist and returns repaired devices using a tracked, insured service, so you can follow your device home. For the precise return arrangements and any sending instructions for your booking, check your confirmation or get in touch – see how mail-in phone repair works for the full process from booking to delivery.