Question about buying a house?

Me and my boyfriend are planning on buying a house. We’ve been pre approved through quicken loans. We were explained that they go off of the lower credit score, which would be his. We were still pre approved how ever. Where w are moving we do not get the mobile service we currently have. I was going to switch us... show more Me and my boyfriend are planning on buying a house. We’ve been pre approved through quicken loans. We were explained that they go off of the lower credit score, which would be his. We were still pre approved how ever. Where w are moving we do not get the mobile service we currently have. I was going to switch us over but they have to do a credit check. How much will this affect us? If they are using his credit score over mine, but I would b on the loan. He would not be on the mobile account, my credit score would be used.
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