CathyBettington
أنشأ الصفحة ب'Basically, any device can easily make a loud noise will work. Repeat the sound three times in quick succession. A gun, whistle, air horn or whatever else will do fine. A whistle is among simplest, cheapest and frequent safety smartphones. You should always have one with you when heading outdoors. A whistle can be heard beyond doubt hundred yards in favorable conditions.<br><br>In most cases, obtain a telephone connection light and portable broadband connection, so...'