Your query to Solr was
which means, Magento told Solr to search for products of a specific store (
fq=store_id:1 ) matching the word "iphone" (
q=iphone) and to return the product_id and score (
fl=product_id,score) of the found products in JSON (
wt=json) object notation (
json.nl=map), but a maximum of 100 hits (
rows=100), starting with the first match (
hits=28 status=0 QTime=13
the request was successful (
status=0) and Solr needed 13 milliseconds (
QTime=13) to execute the search and prepare the 28 found matches (
hits=28) for the response.
So yes, this pretty much looks like a "working" query.