Recorded in several spellings including Langston and Langstone, this is an English surname. It is of locational origin from any of various places so called but specifically Langston in the counties of Devonshire and Hampshire.
Use Speed dial to call a phone number with a single tap. 1  Open the Phone app. 2  Tap. 3  You can also press and hold an unassigned key on the dialpad, and then tap Yes. 4  Select a contact from the list. 5  On the Speed dial screen, choose the phone number of the contact to use, and a speed dial key to assign. 6  Tap Save.
By David Nguyen. Calculate theoretical speed for a car in each of its gear ratios. If a car has less than 6 speeds, only enter numbers for the ratios that apply (i.e. no need to enter anything in '6th' gear for a car with only 5 speeds). Use redline RPM to figure top speed for each gear.