How to make my application visible for all devices including tablets in android market?

How to make my application visible for all devices including tablets in
android market?

I have an android application which access incoming & outgoing calls.
Below is the manifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="xxxx"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="9" />
<uses-feature
android:name="android.hardware.telephony"
android:required="false" />
<uses-feature
android:name="android.hardware.location"
android:required="false" />
<supports-screens
android:anyDensity="true"
android:largeScreens="true"
android:normalScreens="true"
android:smallScreens="true"
android:xlargeScreens="true" />
<uses-permission
android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission
android:name="android.permission.WRITE_SECURE_SETTINGS" />
<uses-permission android:name="android.permission.CALL_PHONE" />
<uses-permission android:name="android.permission.READ_CONTACTS" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission
android:name="android.permission.PROCESS_OUTGOING_CALLS" />
<uses-permission android:name="android.permission.MODIFY_PHONE_STATE" />
<uses-permission android:name="android.permission.WRITE_SETTINGS" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<uses-permission
android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission
android:name="android.permission.CHANGE_NETWORK_STATE" />
<uses-permission
android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission
android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.EXPAND_STATUS_BAR" />
<application
android:name="xxxx"
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar.Fullscreen" >
<activity
android:name="xxxx"
android:label="@string/app_name"
android:screenOrientation="portrait" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
----------------------
------------------------
</service>
<receiver android:name="ReceiverOutgoing" >
<intent-filter>
<action
android:name="android.intent.action.NEW_OUTGOING_CALL" />
</intent-filter>
</receiver>
<receiver android:name="ReceiverIncoming" >
<intent-filter>
<action android:name="android.intent.action.PHONE_STATE" />
</intent-filter>
</receiver>
</application>
</manifest>
In my application I used two Broadcast Receivers for listening incoming
and outgoing calls which is specified in the manifest also I start one of
the this receiver from code because firing this receiver from manifest is
little late.
Also I want to read the contacts from device.
Now my issue is that this application is not visible for some devices in
android market. I want to make my application visible for all devices
including tablets.
What are the changes need in my code to make my application compatible for
tablets which does not have Phone functionality?
How can i check whether the device supports Contacts?ie, which required to
use READ_CONTACTS?
Again my issue is that i want to make my application compatible for
devices which does not have call functionality only wifi.What are the
necessary changes required?I am stuck on this issue
Thanks in Advance