my 4 was great when first opened....now the range is 20% of what it was along with altitude

loosing connection now also

any help please?

Hi, thanks for reaching DJI Forum. We do apologize if you are having issues with the aircraft. May we ask if you calibrated already the firmware prior to that flight? Have you noticed any errors from the app? Also, try to position the antennae parallel to the ground or perpendicular too until you reached the maximum performance of your remote. Thank you.