Generally, 4G and TD-LTE services have better quality compared to ADSL, however, if the
signal coverage is weak in your
area, then ADSL is the better choice. Note that even with a speed like 1 Mbit you can
attend the classes, but it is
more important to have a stable connection that won’t be interrupted. Also, internet service
providers with the
technology of fiber-optics are proven to have higher quality and are suitable for online
learning.