What would be the ★-rating of this review (★ being the lowest and ★★★★★ being the highest)? "Linphone has some serious issues. After a call has ended  the proximity sensor stays on  causing the screen to black out constantly (on my Nexus 5 w/ CM13). Also  it uses port 5060 by default even though the Random Port is selected. This causes dummy calls from malicious IP scanners to come through directly to the app  bypassing your SIP provider. It took me awhile to figure out why I was getting these calls till eventually I toggled the Random Port button off and then on again and got an actual random port. If these sorts of problems get attention from the developers  Linphone has the potential to be great  but for now  I'm back to Zoiper."
★★

What would be the ★-rating of this review (★ being the lowest and ★★★★★ being the highest)? "Pretty good"
★★★★★

What would be the ★-rating of this review (★ being the lowest and ★★★★★ being the highest)? "Good but speed of download is very low specially films"

★★★★