# Why TSA asks you to turn on your phone

> The Transportation Security Administration requires travelers to power on devices at airport security to confirm they work and haven't been tampered with for dangerous purposes.
- Title: Why TSA asks you to turn on your phone · Engadget | Shortify
- Summary: The Transportation Security Administration requires travelers to power on devices at airport security to confirm they work and haven't been tampered with for…
- Keywords: tsa, airport security, smartphones, device screening, cbp, border security, Engadget
- Source: Engadget — https://engadget.com/2307751/why-tsa-ask-turn-on-phone-safety-reason
- Author: Christine Persaud
- Published: 2026-11-10T00:00:00+00:00
- Read time: 1 min
- Topics: tsa, airport security, smartphones, device screening, cbp, border security, technology
## TSA's phone power-on rule
The Transportation Security Administration has required travelers from overseas to turn on electronic devices including phones since 2014. This proves devices are functioning and haven't been tampered with.

> phones can be used as detonators, jamming devices or to store bomb components
## What happens if your phone won't power on
If your device lacks power and won't turn on, you may face additional screening at airport security. TSA agents need to confirm the device is a functioning phone, not something repurposed.
## CBP has broader search powers
US Customs and Border Protection can search your phone at the border under the border search exception. Without reasonable suspicion they can only inspect text messages and app activity. With it, they can download everything.
## Keep your battery charged when traveling
Most travelers never face these requests, but you should keep your phone powered up when flying. If asked to turn it on, simply power it up or unlock the screen to show it works.
## Key takeaway

TSA has required travelers from overseas to power on phones since 2014 to verify they function and haven't been modified into weapons or detonators.