Raws li cov neeg siv khoom tus cwj pwm tseem txav mus rau cov khoom siv mobile, cov lag luam lag luam tau hloov pauv lawv lub hom phiaj mus rau cov tswv yim lag luam mobile. Thiab, txij li cov neeg siv khoom siv feem ntau siv cov apps ntawm lawv lub xov tooj ntse, nws tsis yog qhov xav tsis thoob tias hauv-app tshaj tawm hais kom tsov ntxhuav feem ntawm kev tshaj tawm xov tooj ntawm tes. Ua ntej muaj kev sib kis, kev siv xov tooj ntawm tes tau taug qab kom pom 20 feem pua nce hauv…