iPhone digger

When you type a letter using iPhone, caps lock is rarely used on it, whereas sometimes you just need the next couple of letters to be capitalized.

But don be worry, there are two method you can try.
first iPhone's multi-touch is smart enough to allow you use the shift key just like you can on a computer. So if you need to type something like “HALLO” or “OK”. Simply hold down the shift key while you type on the iPhone's keyboard and every letter will be capitalized.

Second, you can combine it with Caps Lock feature included in iPhone. So try to finding it so you can turn it on.

Here's how:
Tap Settings > Tap General > Tap Keyboard > Tap the Enable Caps Lock slider

The Caps Lock slider is like a toggle switch. Tapping it once enables the feature, tapping it a second time shuts it back off.

Now you can use the Caps Lock just in simple way by quickly tap the Shift key twice. Instead of the usual glowing arrow that tells you your next letter will be upper case, the whole Shift key turns blue. Tapping the Shift key again turns Caps Lock back off.
That's sure to save you a few taps every now and then! Looks so simple but its very nice.