It looks like the phone had been broken or hidden. The direction may be north east.

jerry are you referring to the second house ruler Saturn Rx ?

I would use Ve to represent mobile, ruler of radical 6 house, because it was in possetion of her daughter, There are indications that it will be found, Ve trine POF (day formula)! And because Ve is in detriment it can be damaged. Ruler in angular house means the lost object is where it ought to be: nearby, quick and easy to find. First looks among papers, books, paper money , because it si  among other things where she have  a lot of her materials.
It can be at places near a chimney, stoves, furnace room, room where machinery and tools are kept, room with locked doors or closets, places where iron or junk is stored, area where guns and ammunition are kept, in rooms predominantly red in color, tool closets and a room with fireplaces.
If it is outside it can be near or on sandy grounds, newly opened tracts of land or land recently plowed, virgin land, burned land , tool sheds, near a pine tree, storage place for a lawnmower.   Or it might be a bakery, sports arena, sports club, hardware store, butcher shop, and the dentist's office if she went there.

Ruler in 4 house means to look at home, in the kitchen,  pantry or basement. In a safe, secure place. Any place where food is stored.  Father's room. Where food is kept, old peoples home. Informal room.

Direction: North
Near colour:dark blue

POF is in 1st house in Sag. POF in mutable sign indicating the item is  inside something: car, box, book,  pocket , envelope, drawer, cupboard, bag, suitcase, container or under or between something.It can be in an upper room, near  the fire or radiator, the largest room of the house, places where entertainment of guests is held, rooms where insurance policies are kept, a room where pets are allowed in the house, place where prayer books and college books are stored, among college memorabilia, place where woolen products are stored, room where very expensive furniture or imported things are.
Or if it outside search  on hills and highlands, near or on land which is best seen by raising your eyes to view it, near a maple or an oak tree, places where horses are allowed to graze, where horseback riding is done, on sloping grounds.  
POF in 1st house meansto look at  the entry hall, front porch, front door and windows of a house.

Direction: east
Near colour:red, blue

Thank you Airgon and Fensi88.  I have just about given up hope of seeing it again but I will have one more search.