my iPhone 5 dose not say ISO when i post picture on Facebook why?

[Daryl]

I got a new iPhone 5 theses nothing wrong with it the software is all up to-date the only very small problem i have with it is when i post a picture on Facebook with my iPhone it dose not come up with ISO pictures on my Facebook when i post a picture it should say ISO but it don't it said just now or my lactation i think its really cool when someone post a picture on there Facebook and it comes up with ISO but, mine done seem to do this like when you use your blackberry it comes up with uploaded from blackberry when you post a picture or windows phone the little logo mine don't say it why

[Computers]

The Facebook app will say IOS, but going to Facebook.com on your iPhone and posting a picture won't say anything.

[.....]

Click on required picture and press the square box and arrow symbol, select Facebook and send that way. It will say IOS then. Simply going on fb and posting a picture there will not do it