When the Phone Rings has everything in it: sadness, Happiness, and a Thriller. It is a complete package. The acting of the entire cast was top-notch. From the start, the show gave the Wattpad-coded vibes. Yet the last episode was a little boring, especially the Argan part, which I felt was really unnecessary. Instead of that, if we had been shown a little story of the Second lead's love, it would have been better. Nonetheless, the show gave everything and had a very good pacing. Neither too slow to become boring nor too fast to leave many loopholes.
The OST was beautiful and catchy. I will give a little less on the rewatch value because for me it was a one-time watch as there were many plot twists and not many couple scenes of the main leads.
To anyone wishing to start it, do watch it without hesitation. Hands off it was a very good show.