Modern phones are excellent cameras, if you set them up right. Most grainy, washed-out or wobbly phone videos aren’t a hardware problem. They’re a few settings left on the wrong default, and a couple of habits.

Here’s a checklist that works on almost any recent iPhone or Android phone. Menu names differ between brands and change with updates, so where it matters, look for the setting rather than the exact path.

Before anything: clean the lens

It sounds too simple to matter, but it’s the most ignored tip there is. Fingerprints and pocket lint make everything look hazy, with glowing blobs around lights. Wipe the lens with a soft cloth every single time you film.

Use the back camera

The back camera is usually much better than the front: sharper, better in low light, with more lenses. If you need to see yourself, try a small mirror behind the phone, a smartwatch or second device as a viewfinder (many phones support this), or just film a quick test and check it. Keep the front camera for quick casual videos.

Resolution: 4K or 1080p?

  • 1080p (1080 × 1920 vertical) is what most short-video apps show viewers.
  • 4K has about four times the pixels: sharper, but much bigger files.

A good default: film in 4K if your phone and storage can handle it, then export at 1080 × 1920. The extra resolution gives you room to crop and reframe in the edit. Every app re-compresses uploads, so 4K won’t usually look four times better on someone’s phone.

Two catches. On some phones, 4K (or a high frame rate) only uses the middle of the sensor or switches lenses, so the picture suddenly looks more zoomed in; step back if it does. And in very low light, some phones look noisier in 4K, so 1080p can be the better choice indoors at night.

Frame rate: 30 fps for most things

30 fps (or 25 fps where the power supply is 50 Hz, like the U.K. and Europe) is the safe default for talking videos and tutorials. Use 24 for a film look, and 60 for action or anything you want to slow down. Pick one and use it for every clip in a video.

There’s a full guide to 24, 30 and 60 fps, including how to avoid flickering lights.

Lock focus and exposure

Phones constantly adjust focus and brightness. That’s great for snapshots and bad for video: the focus “hunts” when something moves, and the brightness jumps when you move or a bright window comes into frame.

The fix: tap and hold on your subject until you see a lock (often labeled AE/AF lock). Now focus and brightness stay put. After locking, you can usually slide your finger up or down to brighten or darken the picture.

Expose for the most important thing, usually a face, and check that bright areas like a window aren’t completely white.

Use the zoom buttons, not a pinch

Tap the zoom buttons (0.5x, 1x, 2x and so on) instead of pinching. Those steps are what your phone is built and tuned for. Pinching to a point in between usually just crops and enlarges the picture, making it softer and grainier.

The 1x main lens is usually the best quality, especially in dim light. On some phones, 2x or 3x is a crop from the main camera rather than a separate lens, which looks fine in good light but soft in the dark. If a zoomed shot looks soft indoors, walk closer at 1x instead.

Stabilization: on for handheld

Leave built-in stabilization on when you’re holding the phone. Some phones have an extra “action” mode for walking and running that crops the picture slightly. On a tripod, stabilization matters less, and the steadiest shots always come from a tripod. A small tabletop tripod with a phone clamp is one of the best cheap upgrades you can buy.

HDR: test it before you trust it

Many phones film in HDR (high dynamic range): brighter brights and more shadow detail. On your phone it can look stunning. But some apps don’t handle HDR consistently, and footage can come out washed out or blown out after upload.

Film one video both ways and post it to the app you use most. If HDR looks wrong after uploading, turn off HDR video in your camera settings and film in standard (SDR), or convert to standard color in your editing app before export.

Turn on grid lines

Turn on the camera grid. It helps you keep the horizon level and put eyes on the upper third of the frame, which looks more natural than dead center and keeps your face clear of each app’s buttons.

Watch out for “AI” camera features

Phones now apply a lot of processing: skin smoothing, heavy low-light modes, fake background blur, “enhanced” zoom. These can rescue a shot, but they can also make food look waxy, skin look plastic, edges around hair smear, and even change a product’s real color. For reviews, tests and before-and-after videos, turn off anything that beautifies or generates detail. For everything else, film the same ten seconds with the feature on and off and compare at full size.

Before you hit record

  • Charge up and clear space. Video eats storage and battery.
  • Turn on airplane mode or Do Not Disturb so calls and notifications don’t interrupt, or show up in your shot.
  • Use your phone’s own camera app for your best videos. In-app cameras in TikTok or Instagram are fine for quick trend videos but usually give lower quality and footage that’s harder to reuse.

When you upload

Many apps have an upload quality setting, something like “Upload HD” or “Upload at highest quality.” Turn it on; otherwise the app may squash your video more than it needs to, especially on mobile data.

Good export starting points for vertical video: 1080 × 1920, MP4 (H.264), the same frame rate you filmed, AAC audio at 48 kHz. Your editing app’s “high quality” preset is usually fine.

Defaults, not laws

All of these are sensible defaults: settings that work well most of the time so you can stop thinking about them and focus on the video. When a default and your eyes disagree, test both on your phone, the way viewers will see it, and trust the test.

Try it

Go through this list on your phone now: clean the lens, turn on the grid, set resolution and frame rate, and practice locking focus and exposure on your face. Then film a 10-second test and watch it back on your phone. For settings tailored to your phone, your light and the app you post to, the Camera Settings Helper builds a checklist for your exact setup.