<p>Messaging app Signal said on Friday it was experiencing technical difficulties and working to restore the service.</p>.<p>Signal has seen a rise in downloads following a controversial change in rival messaging app WhatsApp's privacy terms, which required WhatsApp users to share their data with both Facebook Inc and Instagram. </p>
<p>Messaging app Signal said on Friday it was experiencing technical difficulties and working to restore the service.</p>.<p>Signal has seen a rise in downloads following a controversial change in rival messaging app WhatsApp's privacy terms, which required WhatsApp users to share their data with both Facebook Inc and Instagram. </p>