Can i give back my iphone 4

The iPhone 4 has a 32-bit processor, can't run anything higher than iOS 7.1.2, and has no 4G or 5G cellular support. You can still use it as an iPod touch music player, or run old games on it that you already have installed. But I do not think that Apple will give you anything for it, or that you would get much for it on the private market. In the U.S., the phone companies have already shut down their 2G and 3G networks, so that phone would have no service at all.

FYI, the oldest iPhone for which Apple currently shows any estimated trade-in value is the iPhone 7 Plus.

Apple Trade In - Apple

You can recycle the iPhone 4 at any Apple Store or Best Buy store at no charge.

Apple won't give you anything in the form of money or trade value for an iPhone 4. And an iPhone 4 is virtually worthless as a cell phone as 3g/2g service has been turned off in most of the world. Pretty much the only thing you can do with an iPhone 4 is recycle it.

Where would you like to "give back" your iPhone 4? If you mean to "Trade In" your iPhone 4, then you can try doing the process for that. However, Apple has already removed support for the iPhone 4, and they may most likely recycle it.