Sending a message with smartphone - Drawing on chalkboard

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Electronics abstract phone showing show screen school satellite review radar push public profile press presentation portable person signal modern maps media medium message mobile mobility monitor pc network object office on online pad sign simple location touch write work with wireless wifi wi-fi wi white web virtual vector us touchscreen touchpad text sketch spot smart smartphone sms social software speech student telephone study suit tablet teach teacher technology map learn access centre contact connect concept computers computer communicator communications communication closeup click classroom class chalkboard chalk center isolated cellular cellphone cell call businessman business bubble board blank blackboard black area application app creative design device digital internet information info in idea icon human hotspot holding hold hand green graphic gps global gadget free display draw drawing drawn education electronic empty equipment fi finder finger flat zone illustration background symbol