Phone Charging FAQ: Cables, Watts and Standards Answered

Quick answer: the whole phone charging FAQ in one paragraph: press air bubbles out from the center of a screen protector toward the nearest edge with a microfiber-wrapped card, and lift the edge with a dust sticker if a speck is trapped underneath. The iPhone 17 has MagSafe with up to 25W wireless charging, the iPhone 11 has Qi wireless at 7.5W with no magnets, the iPhone 17 charges over a USB-C to USB-C cable, a Poco 67W charger is safe for an iPhone but slow, and you recharge an Anker power bank through its USB-C port with a wall adapter.

That is the short version of every question below. This phone charging FAQ groups the answers people search for most, in the order the problems usually show up: install day, wireless charging, cables, borrowing chargers, then power banks.

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Screen protector bubbles

How do I get air bubbles out of a screen protector?

Press them out first. Lay the phone flat and push from the center of each bubble toward the nearest edge using your thumb or a card wrapped in a microfiber cloth. Air-only bubbles usually move on the first or second pass.

A bubble that refuses to move has dust under it. Lift the nearest edge of the protector with a fingernail, dab the adhesive side with a dust-removal sticker (most boxes include them; tape rolled sticky-side out works too) to pick the speck off, then let the protector settle back down from that edge and press outward from the center again. Do not scrape at dust through the adhesive, because that drags a visible streak behind it.

Do small bubbles in a screen protector go away by themselves?

On soft TPU film, yes. Micro-bubbles left over from installation often settle within a day or two as the adhesive flows and evens out. On tempered glass, no. A bubble in glass stays until you press it out or lift and re-lay that section, so fix glass bubbles during installation while the adhesive is fresh.

Can I reapply a screen protector that has dust under it?

Yes, once or twice. Lift fully from the corner nearest the dust, remove every visible speck with a dust sticker, and re-lay from the cleaned side. Each lift picks up fingerprints and weakens the adhesive border, so if the edges stop sealing after a second attempt, the protector is finished. Keeping the room steamy after a shower helps, since humid air holds less floating dust.

iPhone wireless charging

Does the iPhone 17 have MagSafe?

Yes, the whole iPhone 17 lineup supports MagSafe. With a 30W or higher adapter and a compatible magnetic charger, the phones charge wirelessly at up to 25W (the slimmer iPhone 17 Air is rated a bit lower); Belkin's 25W wireless charging guide covers which chargers and adapters hit that rate. Chargers certified for the new Qi2.2 standard can hit the same speeds, and our best Qi2 chargers guide covers those. For the wired side, which is still faster, see the iPhone 17 charging guide.

Does the iPhone 11 have wireless charging?

Yes. The iPhone 11 (2019) works on any Qi pad at up to 7.5W. It has no MagSafe, because the magnetic ring arrived with the iPhone 12 in 2020. So no magnetic charger will snap onto an iPhone 11, and its charging port is Lightning, not USB-C.

Can I use a MagSafe charger with an iPhone 11?

Yes, with two catches. The iPhone 11 draws its Qi ceiling of 7.5W from a MagSafe pad, and the magnets will not hold the phone at all, so lay it flat on the surface rather than trusting a floating stand. If you only own iPhone 11-era hardware, any basic Qi charger does the same job for less money.

Cables and watts

The questions in this phone charging FAQ section are the ones that cost people the most speed for no reason: a wrong cable silently caps an expensive charger. The answers below name the exact cable or wattage to look for.

What charging cable does the iPhone 17 use?

A USB-C to USB-C cable. Every iPhone 17 model has a USB-C port and negotiates USB Power Delivery over it. Any certified cable rated 60W or higher handles the phone's full speed, and a certified 60W USB-C cable costs only a few dollars. Cables with a USB-A plug on one end still charge the phone but cap well below its fast-charging rate.

Do I need a special cable for fast charging?

Not special, just intact and certified. The two things that quietly halve charging speed are an old fraying cable and an uncertified one that keeps dropping out of PD negotiation. If a phone charges fast with one cable and slowly with another on the same brick, replace the slow cable. For how the iPhone 17's newest wired mode picks its voltage, read our SPR AVS explained guide.

Using chargers across brands

Can I use a Poco X5 Pro charger for an iPhone?

Yes, and nothing gets damaged. The Poco X5 Pro ships (in most regions) with a 67W Xiaomi charger whose fastest modes are proprietary Turbo Charge protocols that only Xiaomi phones speak. An iPhone ignores all of that and negotiates standard charging instead, which on the bundled adapter's USB-A port means roughly 10 to 12W. Safe, but slow. For real speed, use a USB-C PD wall adapter of 30W or more.

Can I charge an iPhone with an iPad or MacBook adapter?

Yes. Any Apple or third-party USB-C PD adapter works, and the iPhone draws only the power it asks for, so a 70W MacBook brick charges it no faster and no hotter than the phone's own ceiling allows. If you are buying a new adapter anyway, our best SPR AVS chargers page lists certified 45W options that also fast-charge the iPhone 17.

Will a higher-wattage charger damage my phone?

No. The wattage on the box is a ceiling, not a push. The phone and charger negotiate a contract before any power flows, and the phone never draws more than it requested. The thing that actually ages batteries is heat, which is what the newest charging standards are designed to reduce; see PPS vs SPR AVS if you want that layer. It is the one spec detour this phone charging FAQ takes.

Power banks

How do I charge an Anker power bank?

Through its USB-C port, in most cases. On current Anker models the USB-C port handles both input and output, so you plug a wall adapter into the bank with a certified cable and wait for the indicator LEDs to stop blinking. The bank's input rating, printed on its label and spec sheet (commonly 18 to 30W), sets the recharge speed, so a low-watt phone brick can turn a two-hour recharge into an overnight one. Older models recharge over micro-USB, and a few newer ones have a built-in AC plug or cable.

Can I recharge a power bank with my phone's charger?

Yes. Any USB-C adapter recharges it safely. Match wattage to the bank's input rating where you can: a 20W adapter feeding a bank that accepts 30W input simply charges it at 20W, which is fine overnight and sluggish before a trip.

Is it okay to leave a power bank charging overnight?

Occasionally, yes. Modern banks, Anker's included, stop charging when the cells are full, so an overnight session now and then does no harm. For long-term health, keep a charged bank out of hot cars and direct sun, and top it up every few months if it sits unused. Those habits matter more than the exact hour you unplug.

How much is a Tesla charger for home?

A Tesla Wall Connector has typically sold in the $400-500 range in the US before installation, which adds a few hundred dollars more depending on your panel, and Tesla's own site lists current pricing. This question sits outside what a phone charging FAQ can cover: SPRAVS reviews phone, tablet and laptop charging, where negotiating watts works the same way but the hardware costs a lot less. For EV load calculations and home wiring, a licensed electrician or a dedicated EV site is the better source.

More guides beyond this phone charging FAQ

Last updated: August 22, 2026. We re-check specs and picks on this page as new hardware ships.