IPhone memory, can it be increased?

Ok, I have the iPhone 4 8 gig but I've been thinking if I run out of memory in screwed, so is there a way to increase my hard drive? Maybe I could open my phone and replace the hard drive if that's possible, or anything else

Nope

Sorry to say, but the answer is no. There's no option for expandable memory for iPhone right now. In order to expand the memory of a mobile phone, a manufacturer generally needs to include a slot for removable storage media like an SD card or MemoryStick. The iPhone has no slot for removable storage.

Go pick yourself up one of those huge Seagate HDDS. Then, open the screwless case of the 9mm thin iphone and put the massive HDD in it. It may weight a bit more, stick out of the sides of the case, waste battery power, and probably not even turn on, but hey. You can say that you have the 3TB iphone.

No. Iphone doesn't allow SD memory cards like other cellphone.

Simply not possible.apple does not design their phones to accommodate any sort of consumer freedom.before you get a new iphone, though, consider android… Superior OS with many more features.

IPhone Memory comes preloaded and so you don't have the option to increase or decrease. The hardware is embedded on the motherboard and so you can't expand the memory like you do it in your PC.

Thanks and hope this answer helps you out in one way or other.

These people are all right-in a way. You can't really replace the hard drive. However, you can get one of these-
http://www.kingston.com/us/usb/wireless#wid
It is effectively wireless storage for your iPhone. You just need to carry around a small drive with you. It doesn't have to plug into your iPhone though.

You can't increase internal memory, but I see some guys on Kickstarter already have a working prototype of an iPhone 4/4s/5 expander case that extends battery life, and adds SD card support. It looks really promising:
http://www.kickstarter.com/projects/108290897/iexpander-an-expansion-device-for-your-iphone-4-an

EDIT: Whoah, nice device, Ender! I'll definitely be looking into that.