What does getLine1Number() return with dual SIM phones?
<p>What does <code>getLine1Number()</code> method of <code>TelephonyManager</code> return with dual SIM phones like <a href="http://www.gsmarena.com/lg_optimus_net_dual-4309.php" rel="nofollow"><code>LG Optimus Net Dual</code></a>?</p>
