Question: My old samsung jet phone just started ringing from inside the cupboard, & unknown caller was displayed, although the children use it as a play phone sometimes there is no SIM card installed, how can that happen I thought you had to have a sim in to operate a phone except for emergency calls?

Answer: 
> 
> Install this [***Easy Phone App***](https://play.google.com/store/apps/details?id=com.orange.labs.easyphone&feature=also_installed#?t=W251bGwsMSwyLDEwNCwiY29tLm9yYW5nZS5sYWJzLmVhc3lwaG9uZSJd) into your grandmother's cell and place its shortcut on the screen or the desktop of that android device.
> 
> 
> And tell her to just swipe that ***circle with lock*** off the screen (i.e Unlock screen) whenever she sees one, and touch on that phone icon in the center! (to activate the Phone app)...
> 
> 
> 

Advantages:

* Big font User Interface.
* Descriptive Graphics.

Statistics:

* Average Rating: 4.4 of 5.
* Of 153 people ***97*** have rated it **5** stars.

**Alternative-**

> 
> Install this [***One tap dailer***](https://play.google.com/store/apps/details?id=com.duriapp.onetapdialer&feature=also_installed#?t=W251bGwsMSwxLDEwNCwiY29tLmR1cmlhcHAub25ldGFwZGlhbGVyIl0.).
> 
> 
> 

Features:

* It gives a *speed dail* like facility. Meaning that, it creates a dedicated app icon on screen for each and every contact. That would be good if she has some few fixed people to talk or chat to.

Statistics:

* Of 17, **7** rated it as **5** stars.
To do exactly what you want, you can install [Tasker](https://play.google.com/store/apps/details?id=net.dinglisch.android.taskerm&hl=en). You can try tasker from its [website](http://tasker.dinglisch.net/download.html) rather than from Google Play store and this allows you to test it for free for 7 days in a device.

With Tasker, I created a profile which watches for an event for screen-unlock and launches dial pad once it gets triggered. You can download the following content as an XML file and import it into your Tasker installation to test.

```
<TaskerData sr="" dvi="1" tv="1.6u1m">
  <Profile sr="prof10" ve="2">
    <cdate>1366177538819</cdate>
    <edate>1366177654712</edate>
    <id>10</id>
    <mid0>12</mid0>
    <nme>Unlock</nme>
    <Event sr="con0" ve="2">
      <code>1000</code>
      <pri>0</pri>
    </Event>
  </Profile>
  <Task sr="task12">
    <cdate>1366177546567</cdate>
    <edate>1366177572658</edate>
    <id>12</id>
    <Action sr="act0" ve="3">
      <code>90</code>
      <Str sr="arg0" ve="3"/>
      <Int sr="arg1" val="0"/>
    </Action>
  </Task>
</TaskerData>

```