docs(mobile-phone-waterfall): add plan availability note (Launch+ required)

docs/mobile-phone-waterfall.md

@@ -14,7 +14,7 @@ The Mobile Phone waterfall finds a person's mobile (cell) phone number by queryi
 
 You only pay credits for the provider that finds a match, making it one of the most credit-efficient ways to build phone coverage at scale.
 
-**Available on:** Launch plan or higher. Phone number enrichments are not available on free or trial plans — this restriction applies even if you have unused data credits. To access the Mobile Phone waterfall, upgrade to a paid plan. See [Plans & billing](plans-and-billing.md#trials) for details.
+**Plan availability:** The Mobile Phone waterfall requires the **Launch plan or above**. It is not available on the Free plan or during the free trial period — this restriction applies even if you have unused data credits. Work email enrichment, people search (Find People), and LinkedIn profile resolution (Enrich Person) work on all plans including Trial — so you can build and validate the rest of your table workflow before upgrading. To upgrade, go to **Settings → Plan & billing**. See [Plans & billing](plans-and-billing.md#trials) for details.
 
 ## Setting up the Mobile Phone waterfall
 
@@ -103,4 +103,4 @@ It can. Rejecting more numbers means the waterfall calls more providers per cont
 **Some of the phone numbers the waterfall is returning are wrong or outdated — how do I find out which provider is responsible?**
 Enable **Output name of successful provider?** in your waterfall's **Additional column settings**. This adds a column to your table showing which provider returned the accepted number for each row. When reps flag a bad number, check that column to identify a pattern — if the same provider appears repeatedly on flagged rows, that provider may have stale data for your specific audience or geography.
 
-To compare providers directly before committing to a waterfall order, run individual provider enrichments on the same set of contacts rather than nesting waterfalls. Running them as separate columns makes each provider's result visible and attributable, so you can evaluate accuracy across sources side by side. Once you've identified which providers consistently return the most accurate results for your use case, reorder or disable underperformers in the waterfall's **Waterfall sequence** configuration.
+To compare providers directly before committing to a waterfall order, run individual provider enrichments on the same set of contacts rather than nesting waterfalls. Running them as separate columns makes each provider's result visible and attributable, so you can evaluate accuracy across sources side by side. Once you've identified which providers consistently return the most accurate results for your use case, reorder or disable underperformers in the waterfall's **Waterfall sequence** configuration.