A photo on wood is a different animal than a photo on a screen. The grain, the matte surface, and the print process all change what you see. Most phone photos make the jump fine. Some do not, and it is almost always for reasons you can check before you order.
Contrast survives. Subtlety does not.
Wood printing rewards images with clear lights and darks. A bright face against a simple background comes through strong. A photo that relies on delicate gradients, a moody sunset with a hundred shades of the same orange, tends to flatten and lose what made it special on the phone. If your favorite shot is all soft tones, it can still work, but expect it to read more as an impression than a crisp reproduction.
Resolution matters more than megapixels
People assume a recent phone takes high enough quality photos for anything, and usually it does. The trouble is rarely the camera. It is the source. A photo screenshotted from social media, saved off a text thread, or pulled from a group chat has already been compressed, sometimes more than once. Blown up onto a board, that compression shows as soft edges and blocky patches.
Send the original file straight from the camera roll, not a screenshot and not a version someone forwarded to you. If the only copy you have came through a messaging app, it may already be too degraded, and it is better to know that before it is printed than after.
Busy backgrounds compete with the subject
A cluttered background that your eye ignores on a screen becomes loud on a wall. For a photo sign, a clean or blurred background lets the subject carry the piece. If the photo you love has a chaotic scene behind the people, tell us. We can often work with it, but you should go in knowing the wall version will feel busier than the phone version did.
Black and white hides a lot of sins
If you are unsure whether a photo is strong enough, converting it to black and white before printing can rescue it. Color casts, mismatched lighting, and a slightly off white balance all disappear, and what is left is shape and expression, which is usually what mattered in the photo anyway. For older or scanned photos especially, monochrome on wood looks intentional rather than faded.
What to send us
The short version: send the largest, most original file you have, shot in decent light, with the subject clearly lit. If you can see the photo clearly at full size on your own screen without it going soft, it will almost certainly hold up on wood. If it already looks fuzzy zoomed in, no process can add detail that the file does not contain.