zdnet[.]com/article/the-nsa-advises-you-to-turn-your-phone-off-and-back-on-once-a-week-heres-why/
s3.documentcloud[.]org/documents/21018353/nsa-mobile-device-best-practices.pdf
Spearphishing attacks can target your phone to install malware, while zero-click exploits are able to infect your device without any interaction on your part. The NSA's advice? Power your phone off and then back on again at least once a week. This simple action can make it more difficult for hackers to steal information from your phone, though the agency cautions that this will not always prevent an attack.