Abstract: Methods for responding to an email message by a phone call from a mobile device are described. In some embodiments, mobile devices are capable of receiving emails. The emails may be in form of messages in a threaded conversation. Each message has metadata and the metadata includes a phone number corresponding to a sender of the message. The text or information associated with the message is displayed but not the metadata. While a user is reading the message displayed on the mobile device, the user is provided with a plurality of options to respond to the message, an option is for the user to call the sender of the message using the phone number in the metadata. Upon selecting such an option, the user is able to initiate a call to the sender of the message by activating a feature to call using the phone number stored in the metadata without physically looking up and dialing the sender's number. Other embodiments are also described.

Abstract: Methods for implementing an auto-complete feature for contact entry on mobile devices are described. In some embodiments, a mobile device downloads from a server a number of contacts associated with a user, wherein the number of contacts is a subset of contacts in a contact list of the user. Upon receiving a partial contact entry from the user that includes a string of one or more characters, the mobile device identifies contacts from the downloaded contacts matching the partial entry. The mobile device displays no more than a preset number of matching contacts on the display of the mobile device at any one time, in a particular order, with an option for the user to display and fetch for more matching contacts. Other embodiments are also described.