after long time or suddenly you are facing problem on login your twitter account on your iPhone’s twitter app. as we know twitter is one of the most popular and very secure social networking media on the planet. Twitter logging not successful on your your iPhone by showing message with Unauthorized or invalid username and password (fix twitter not login on iPhone), behind this one of the security reason.
Out dated time your iPhone is one of the main reason, are are travel from one country to another, Current time zone always changed So You have to set your time zone always in update mode. at that time whenever you move from one region to another your iPhone gather time information from carrier you are currently used on your device.
for the security reason about your activity and present your self with current time zone and area when you are accessing your twitter account though your iOS device.
Steps for fix twitter not login on iPhone, iPad and iPod touch
Step 1: Go to the Setting app on your iPhone,
Step 2: Next, Click on General option.
Step 3: Under this, Enable Set Automatically Date and Time in iPhone.
Now whenever you will move to another location, Your device collect all the information related time, Date and Geographic area name.
2nd Fixed: unauthorized or invalid username and password
outdated version of your Twitter app might be one of the biggest solution, Most of the user keep auto update app on iPhone disabled. So you have to update or install manually when new updates are available.
So, Please cheek your app store if update has been available then Update your iPhone twitter app. Still are you facing problem on fix twitter not login on iPhone, Share with un comment we will revet best other possible solution for you!