3 ms·
Most likely because those landline phones transmitted via a copper cable while mobile phones send the audio via a heavily compressed and shared wireless connect
by 7steps2much 4y ago
Most likely because those landline phones transmitted via a copper cable while mobile phones send the audio via a heavily compressed and shared wireless connection that isn't exactly all that reliable.
Cabled connections are superior to wireless ones, even more so because traditional landlines had dedicated connections and as such had no need to compress anything.