you should heating wifi and bluetooth ic and reboiling it or change it
https://www.google.com.eg/imgres?imgurl=http%3A%2F%2Fwww.u2ugsm.com%2Fblog%2Fwp-content%2Fuploads%2F2014%2F04%2FSamsung-S7582-WI-FI-Repair-Solution.jpg&imgrefurl=http%3A%2F%2Fwww.u2ugsm.com%2Fblog%2Fsamsung-s7582-wi-fi-repair-solution%2F&docid=UFUGxKkuUvSsSM&tbnid=-gHm7c854IcyUM%3A&vet=1&w=446&h=312&bih=602&biw=1242&q=samsung%20s7582%20wifi%20not%20working%20solution&ved=0ahUKEwiVuPK4gN3RAhXiCcAKHVRgAX4QMwgfKAAwAA&iact=mrc&uact=8#h=312&vet=1&w=446
you should heating wifi and bluetooth ic and reboiling it or change it
https://www.google.com.eg/imgres?imgurl=http%3A%2F%2Fwww.u2ugsm.com%2Fblog%2Fwp-content%2Fuploads%2F2014%2F04%2FSamsung-S7582-WI-FI-Repair-Solution.jpg&imgrefurl=http%3A%2F%2Fwww.u2ugsm.com%2Fblog%2Fsamsung-s7582-wi-fi-repair-solution%2F&docid=UFUGxKkuUvSsSM&tbnid=-gHm7c854IcyUM%3A&vet=1&w=446&h=312&bih=602&biw=1242&q=samsung%20s7582%20wifi%20not%20working%20solution&ved=0ahUKEwiVuPK4gN3RAhXiCcAKHVRgAX4QMwgfKAAwAA&iact=mrc&uact=8#h=312&vet=1&w=446
you should heating wifi and bluetooth ic and reboiling it or change it
https://www.google.com.eg/imgres?imgurl=http%3A%2F%2Fwww.u2ugsm.com%2Fblog%2Fwp-content%2Fuploads%2F2014%2F04%2FSamsung-S7582-WI-FI-Repair-Solution.jpg&imgrefurl=http%3A%2F%2Fwww.u2ugsm.com%2Fblog%2Fsamsung-s7582-wi-fi-repair-solution%2F&docid=UFUGxKkuUvSsSM&tbnid=-gHm7c854IcyUM%3A&vet=1&w=446&h=312&bih=602&biw=1242&q=samsung%20s7582%20wifi%20not%20working%20solution&ved=0ahUKEwiVuPK4gN3RAhXiCcAKHVRgAX4QMwgfKAAwAA&iact=mrc&uact=8#h=312&vet=1&w=446