Social Networking iPhone apps
Social networking iPhone apps are often the most common apps that you will have to sign into since they are accessing and interpreting an account that exists beyond the iPhone app itself. Twitter, Tumblr, Facebook, Linkedin, MySpace, and others tie directly into a multi platform format of accounts. If you are having trouble logging into iPhone apps then social networking iPhone apps will likely be where it starts.
If you are having trouble logging into Twitter iPhone apps then you will have a few different elements to check, especially since there are more Twitter applications than any other social networking iPhone apps. First, you should check your Twitter username and password information by logging into Twitter from a computer. If this is correct, you can then try to download another free Twitter application, there are several, and try logging into that one. If it does allow for a log in to your Twitter account then you will likely see that the individual Twitter iPhone app that you are using is having a problem. The easiest way to combat this issue is to delete this Twitter iPhone app and reinstall it, unless you find a competing Twitter application that you would rather use.
If you are having trouble logging into Facebook or MySpace from your iPhone, it is going to be a different troubleshooting process since the company produced apps are the focus of use, instead of the varied third-party social networking iPhone apps as is the case of Twitter. You should first check the login information for both through the web browser, which you can try either through Safari or on a computer. The Facebook iPhone app has been designed to simply log in your information automatically once you have entered it, so that you do not have to actually enter your account information over and over again. If this information has been entered incorrectly it may cause trouble logging in automatically and you may just need to re-enter your account information so that automatic log in can continue.
Though most iPhone apps have their own app-specific settings in the iPhone Settings area, none of the settings for the social networking iPhone apps have anything that would give you trouble logging into them. If you believe that you are having trouble logging into social networking iPhone apps because of the lack of available Push Notifications then you should check the settings for each individual app as this is likely the source of the issue, and not a problem with logging in.