Thirty-year-old Richard Dawson from Druids Heath has written a letter of apology to his victims from behind bars.
Dawson did not have a criminal record until he stole a handbag and phone from a female on March 6 this year in Shirley.
He then went on a "robbery rush", taking jewellery and valuables from more than 20 people over a two-month period.
He was arrested by Solihull police and from his home address in Milton Close after he was seen stealing a gold chain from the neck of a woman outside Sainsbury’s in Kings Heath’s Maypole Lane.
Dawson was jailed for eight-and-a-half years on Monday, after admitting three counts of robbery, two attempted robberies and asking for a further 24 offences to be taken into consideration.
In his letter he said:
Investigating officer, Detective Constable Arron Cox from Solihull Police CID, said: