Key phone evidence that wasn’t properly admitted at trial has resulted in a new trial for a convicted armed robbery suspect.Deeming it inadmissible hearsay, the 1st District Appellate Court vacated Juan Ramos’ conviction in a March 30 opinion.During Ramos’ Cook County trial, a west suburban Riverside police officer testified how he used data from T-Mobile to track the location of an SUV Ramos was allegedly in as it followed 71-year-old Francisco Vivas from a Chicago flea market to a friend’s house …