At present, there are mainly Nejema and jezzi in Algeria. Among them, NEDIMA phone cards are charged at 3000DA per minute 15DA, which is equivalent to 7.5DA per minute and about 70 cents per minute. If you call a domestic landline, add the number after 0086 (the area code goes to 0) (for example, Beijing 0 10999999, you should call 00865438).
In fact, the most cost-effective and direct is QQ video, but it depends on the network.