Techstar on Instagram: "I bet you didn’t know this 🤯📱 The bars you see on the side of your iPhone? They aren’t just for design — they have a special purpose! ⚙️ When Apple decided to make its phones with a metallic body and also waterproof, a new problem appeared — no signals! 📶 So, in 2010, Apple came up with a solution in the iPhone 4 — the antenna bands! But here’s the twist 👇 They placed the bands right where people hold the phone, and suddenly users started losing signals 😅 Apple’s res