The Apple iPhone 4, officially declared obsolete by Apple in 2016 and last updated in 2014, is unexpectedly experiencing a revival on TikTok. This trend is driven by users seeking the device's characteristic grainy, vintage aesthetic for photos and videos, contrasting with the advanced cameras of modern smartphones, including the recently released iPhone 17 lineup. However, this nostalgic trend comes with significant security implications. The iPhone 4 runs on outdated iOS versions, such as iOS 7.1.2, which are replete with unpatched security vulnerabilities. Experts warn that using such an old device for contemporary social media platforms like TikTok, which collect extensive user data, creates a "perfect storm of security vulnerabilities." These risks include susceptibility to hacks, malware, and exploits that could compromise personal information, Apple accounts, and other sensitive data. To mitigate these dangers, tech experts advise extreme caution for anyone participating in the trend. Recommended safety measures include not signing in with an Apple ID or any other sensitive accounts on the iPhone 4, avoiding the use of banking or other critical applications, and refraining from inserting a personal SIM card into the device. Users should also avoid general web browsing on the device and instead opt for transferring photos via a physical cable to a computer to minimize exposure to online threats. The surge in interest for the iPhone 4 is evidenced by reports of a nearly 1000% increase in Google searches for "buy iPhone 4" over the last year.