Apps needed please......

Hi peeps..... 1st post here so Hi.... I have browsed a few times before.

Im after a couple of apps if possible, I have a HTC Desire, and i use my bluetooth headset quite alot, but what i would also like is a app so that once i am in a call, i can lock the phone and i can put it back in my pocket and not catch anything.

Also lastley, is there any apps to add more smilies to the phone as some dont pick up like the tounge one -p)



Thanks in advance

Tim.

 

Anyone please?