Phone Guides
A reference page tells you what a standard is; a guide tells you what to check before you spend money. Our guides pull together the cable, charger, screen and repair pages so you can go from a question to a sourced answer without reading every page.
Which guides do we have?
We currently publish one guide, and the rest of the site is organised so the answers to other common questions are one click away.
| Guide | The question it answers | What it covers |
|---|---|---|
| Which charger is safe for my phone? | How do I pick a charger and cable that will not harm my phone? | Certification logos, wattage matching, maker guidance on approved adapters, counterfeit warning signs, wireless chargers and power banks |
Where can I find answers the guides do not cover yet?
Our reference sections answer most follow-up questions directly. Use this table to jump to the right page.
| If you want to know | Read |
|---|---|
| Which port and cable my phone uses | USB-C, Lightning and USB-C vs Lightning |
| Whether a faster cable changes data speed | USB 2.0 vs USB 3.x |
| How to judge a cable before buying | Cable buying safety |
| How fast chargers talk to phones | USB Power Delivery and PPS |
| What the published wattage numbers are | Wattage guide |
| How wireless charging works | Qi, Qi2 and MagSafe |
| What an OLED or LCD screen is | OLED, LCD and refresh rates |
| How to replace a battery or screen | Battery replacement and screen replacement |
| What the specs of a particular phone are | Phone library and the brand hubs |
Where should I start?
Start with which charger is safe for my phone, because every phone in our library needs a charger bought separately. Our library records no power adapter in the box for any of the 41 phones, so the choice is unavoidable.
| What our phone pages say | Phones in our library |
|---|---|
| Charger included in the box | 0 of 41 |
| Wired wattage published by the maker | 16 of 41, from 25W to 68W |
| Wireless charging listed | 35 of 41 |
| Wireless labelled Qi2 | 19 |
| Wireless labelled MagSafe | 16 |
These counts describe our library of 41 phones, not every phone on sale. A blank wattage means the maker publishes only a fast-charge claim or nothing we could verify.
How are our guides sourced?
Each guide lists its sources with the date we retrieved them, and our editorial policy sets the rules: every fact has a live source, we leave out numbers we cannot verify, and prices are launch prices, never current prices. Guides quote standards bodies such as the USB-IF and the Wireless Power Consortium, phone makers’ own support pages, and regulators or safety testers where relevant. When a guide offers a checklist of its own, it says so.
How do I use a guide with the phone library?
Find your phone’s page, read its charging row, then apply the guide’s checklist to the charger you are considering. These four examples show what the rows look like in our library.
| Phone | What the maker publishes | What to check before buying |
|---|---|---|
| iPhone 17 | Up to 50% in 20 minutes with a 40W adapter or higher; MagSafe up to 25W | The adapter’s wattage against Apple’s claim, and for MagSafe a 30W or greater adapter rated 15V/2.0A or higher |
| Galaxy S26 | 25W wired; Samsung says to use a 25W or 45W Samsung-approved adapter for Super Fast Charging | That the adapter is Samsung-approved, since other accessories may invalidate the warranty |
| Pixel 11 | Up to 55% in about 30 minutes with a 30W USB-C PPS charger or higher | That the charger supports PPS |
| Moto G Power (2026) | 30W TurboPower wired; no wireless charging | The adapter’s wattage; there is no wireless step |
Then run the safety checks in which charger is safe for my phone: a certified product, a trusted seller and a brand you can look up.
Related
Chargers, cables, screens, repair, accessories, brands and the phone library.