[ -n "$delay" ] && sleep "$delay"
while uqmi -s -d "$device" --get-pin-status | grep '"UIM uninitialized"' > /dev/null; do
+ [ -e "$device" ] || return 1
sleep 1;
done
echo "Waiting for network registration"
while uqmi -s -d "$device" --get-serving-system | grep '"searching"' > /dev/null; do
+ [ -e "$device" ] || return 1
sleep 5;
done