A cracked screen is straightforward only after you identify the exact device. Searching for “Samsung Galaxy A54 screen” or “iPhone 13 battery” can produce parts that look right but do not fit the frame, connector or regional variant in your hand. This phone model number lookup guide shows how to find the code that matters before ordering a replacement part.
For repair shops, getting this right prevents returns, delays and stock wasted on an incorrect job. For DIY repairs, it avoids opening a device only to find that the replacement screen, battery or charging port is incompatible. The model number is the starting point for every accurate parts search.
What a phone model number tells you
A model number is the manufacturer’s specific identifier for a device variant. It is usually a short code made up of letters and numbers, such as SM-S911B for a Samsung Galaxy S23 or A2633 for an iPhone 13. Unlike the marketing name printed on the box, this code can distinguish between devices that share a similar name but use different parts.
That distinction matters. A 4G and 5G version of the same handset may have a different screen assembly, rear housing, charging flex or antenna layout. Regional models can also vary by processor, SIM tray, network bands and internal bracket placement. The phone’s colour, storage capacity and carrier branding often do not affect a common repair part, but they should never be used as the sole identification method.
Do not confuse the model number with the serial number or IMEI. A serial number identifies one individual device. An IMEI identifies the mobile handset for network purposes. Both can help with manufacturer support, but neither is normally the code used to select replacement parts. Keep IMEI details private when seeking repair advice.
Phone model number lookup guide: where to look first
The fastest method is usually within the device settings. If the phone still powers on, open Settings and look for About phone, About device or General > About. The entry may be labelled Model name, Model number, Regulatory model or simply Model.
Record the code exactly, including every letter, number and hyphen. A single character can change the result. For example, Samsung model codes commonly include a final letter that identifies the intended market. When ordering parts, use the full code rather than shortening it to the product family.
Apple iPhone and iPad
On an iPhone or iPad, go to Settings, then General, then About. The first model reference shown may be a part number beginning with M, N, F or P. Tap that entry to display the hardware model number, which begins with A.
The A-number is generally the most useful reference for confirming the exact generation and size. This is especially relevant where models have near-identical names, including iPhone generations with standard, Plus, Pro and Pro Max versions. An iPhone 14 and iPhone 14 Pro are not interchangeable for screens, batteries, camera modules or housings.
If the device cannot be switched on, check the fine print on the rear of older iPhones and iPads, the SIM tray where applicable, or the original packaging. Newer iPhones may not show a usable model code externally, so settings or the box label are often the better options.
Samsung Galaxy devices
For Samsung phones and tablets, open Settings, select About phone or About tablet, then find Model number. Samsung codes typically begin with SM-. Examples include SM-G series codes for Galaxy S devices, SM-A codes for Galaxy A devices and SM-X codes for Galaxy tablets.
Do not order based solely on “Galaxy S”, “Galaxy A” or a year of release. The Galaxy A range in particular contains multiple models with similar numbers and different sizes. A Galaxy A34 screen will not fit a Galaxy A54, even though their naming and release period are close.
On many Samsung devices, the model number is also printed in small text on the rear cover, the SIM tray area or the original carton. If a rear housing has been replaced, treat external markings carefully and confirm through settings where possible.
Google Pixel, Motorola, Oppo, Xiaomi and other Android brands
Most Android manufacturers place the model code in Settings > About phone. The wording differs, but it is commonly found under Device details, Regulatory labels or Model and hardware. A code may be less recognisable than the retail name, which is why checking both fields is useful.
For Google Pixel devices, confirm the model name as well as the model number, particularly when comparing standard, Pro, a-series and Fold models. Motorola, Oppo, OnePlus, Huawei, Nokia, ASUS, LG, Sony Xperia and Xiaomi devices may use codes that vary between markets. If the device has a dual-SIM or carrier-specific edition, include that detail when checking part compatibility.
The label inside the SIM tray slot, on the rear cover or beneath a removable battery can provide a second check. On older devices, the model code may be printed under the battery. Never force a battery out of a modern sealed phone just to inspect a label. Use settings, the original packaging or a repair-safe disassembly process instead.
Check the device before ordering parts
A correct model number is essential, but it is not always the only compatibility check. Before ordering, compare the device’s physical features with the listed part description. Look at the screen size, camera cut-out, fingerprint sensor location, charging connector type and frame shape.
This is particularly useful with display assemblies. Some screens are supplied with a frame, while others are panel-only parts that require transferring small components from the original frame. A screen may be compatible with the same model number but still be the wrong repair option for the tools, adhesive and repair time available.
Battery fitment also deserves care. Manufacturers can use similar battery codes across related models, while aftermarket listings may group several variants together. Match the battery part number printed on the original battery where safely accessible, then confirm it against the device model. If the original battery is swollen, do not continue dismantling it or attempt to reuse it.
For charging ports, loudspeakers, cameras and flex cables, inspect the connector position and board layout if there is any doubt. These small parts can differ between regional versions or revisions of the same device family. A clear photo of the original component can help confirm the match, provided no personal information is visible on the screen or labels.
When the model number is missing or unreadable
A phone that is dead, badly damaged or previously repaired can be harder to identify. Start with the original box, purchase invoice or carrier documentation. The retail name may be enough to narrow down the candidates, but seek the full model code before ordering a part with tight fitment requirements.
If the handset powers on but the display is unusable, connect it to a computer only if you can do so safely and the device is already trusted. Manufacturer software may display a device name, though it may not show the exact regional variant. A technician can also identify the device from board markings or the original part numbers after opening it.
Avoid guessing from a case, screen protector or camera layout alone. Cases are often marketed across several variants, and copied designs can make unrelated budget phones look similar. A wrong part costs more than a few extra minutes spent confirming the model.
A practical workflow for trade and DIY repairs
For a reliable parts order, note the brand, retail model name and full model number first. Then identify the repair required, such as display assembly, battery, rear cover, camera lens or charging port. Compare the device details with the part description and any stated variant limitations before placing the order.
For repair businesses, add model verification to the intake process before quoting. Photograph the device condition, record the code and check whether it has already been opened or fitted with non-original components. This protects the job margin and gives the customer a clearer repair expectation.
For DIY users, assess the repair difficulty honestly. A back cover or screen protector may be manageable with basic tools, while a bonded display, battery adhesive removal or charging-port replacement can require heat control, precision tools and careful cable handling. The correct part is only one half of a successful repair.
Accurate identification keeps a repair moving. Check the model number before you order, confirm the physical variant before you open the device, and you will spend less time correcting avoidable compatibility mistakes.