Hidden dial-in codes give iPhone 17 users access to quick system shortcuts and network tools, and while most of them have been around for older models, the latest handset brings them into sharper focus. Among the most useful is the code to check your device’s unique IMEI number: just open the dial pad and type the familiar sequence to display the device identifier instantly. Other codes unlock a field-test mode revealing detailed cellular metrics like signal strength, network type and radio band—ideal for users who want to peek under the hood of their mobile connection.
Call-forwarding and blocking features also remain accessible via codes. For instance, you can check where unanswered calls are being forwarded, or deactivate all forwarding at once, by entering simple star- and hash-prefixed numbers. There are also carrier-specific shortcuts that allow you to check your account balance, minutes used, or data consumption via dial-in commands, which save you opening the carrier app. However, Apple and carriers stress caution: some codes might trigger more advanced changes, route calls unexpectedly or reveal technical menus that are best left alone if you’re unsure.
It’s worth noting that not every code works across all networks or regions—some carriers disable them or assign different sequences. And while the iPhone 17’s iOS update doesn’t invent new codes, the awareness of these shortcuts is timely, as many users look for faster ways to manage settings or inspect network and device status without digging through multiple menus. Whether you’re checking roaming status, verifying if caller ID is blocked or simply viewing your phone’s identifier, these dialer tricks offer a deeper level of control than the average iPhone user might realize.
