Add this code to app.config.
<bindings>
<webHttpBinding >
<binding name="Binding" maxBufferPoolSize="2147483647" maxReceivedMessageSize="2147483647" maxBufferSize="2147483647" transferMode="Streamed">
<!--<security mode="Transport">
<transport clientCredentialType="None" />
</security>-->
</binding>
<binding name="httpbind" crossDomainScriptAccessEnabled="true" maxReceivedMessageSize="10485760">
</binding>
</webHttpBinding>
<basicHttpBinding>
<binding maxReceivedMessageSize="10485760">
<!--<readerQuotas ...="" />-->
</binding>
</basicHttpBinding>
</bindings>
and remember add in service tag the below code.
<endpoint behaviorConfiguration="web" binding="webHttpBinding" bindingConfiguration="Binding" name="Android" contract="com.Order.Service.IService" />